Try to toss the ball into the same spot every time? Let your racket head drop behind you and then hit the ball suddenly.
尽量在发球时每次都把球抛到相同的位置，然后将球拍举到头后方，瞬间击球。
Hall decoration simple atmosphere, zhuchu ancient mirror, ancestral hall facade board building walls, eaves and Ming hook head drop remains.
宗祠装饰简单大气，柱础古镜式，宗祠立面为板筑泥墙，出檐还有明式勾头滴遗存。
His mother shook her head and wondered aloud whether life would be easier if he just let the science fair thing drop.
他的母亲摇着头说，她真想知道，如果科学展览会比赛的事情没有发生，是否他的日子会更容易些。
Its efforts to persuade companies to drop the prices of TV shows have been rebuffed by all except News Corporation and Disney, on whose board Steve Jobs, Apple's head honcho, sits.
它曾努力想要说服各媒体公司降低电视节目价格，但这种要求除了新闻集团和迪士尼接受并邀苹果总裁斯蒂芬·乔布斯加入他们的董事会外，其他公司都断然拒绝。
Fertility starts to drop at an annual income per person of $1, 000-2, 000 and falls until it hits the replacement level at an income per head of $4, 000-10, 000 a year (see chart 2).
人均年收入到1000至2000美元时，生育率开始降低，收入到4000至10000时，生育率降到生育等值更换水平（见图表2）。
Then they fly out north for another couple of hours to drop off fuel at a fuel "cache" and then fly back again - and that's all before they can start to head out to us.
然后，他们又往北飞行数小时，去给一个加油站送燃料，随后返回——这些是飞往我们这里之前飞机要做的所有事情。
Wang Chuanfu, the 45-year-old head of BYD, a car company in which Warren Buffett has a stake, also saw his wealth drop by a third.
王传福，45岁的比亚迪老总，比亚迪是曾被巴菲特看中的汽车公司，其资产也缩水了三分之一。
Apple Inc. managed to head off likely criticism in Europe over its music-download restrictions by moving to drop them.
苹果(AppleInc .)则在欧洲采取措施取消音乐下载的限制，希望以此阻止可能面临的批评指责。
The bird closes its eyes. Just then, a drop of water falls on its head. Then, a second later, another drop falls on its tail.
小鸟闭上眼睛一会儿。就在这个时候，一滴水珠掉在它头上。接着马上又有一滴水落在它的尾巴上。
Myra had let her shawl drop from her head and back upon her shoulders. Patrolman Casey's voice changed, and his eyes became hard, glittering steel.
迈拉从头上把披肩拿下来，披回到肩膀上。这事，凯西警官的声音突然变了，眼神变得锐利起来，像钢铁般闪闪发光。
The cerebral computer scientist at the head of Google is far more affable than the intense, fiercely driven college drop-out who turned Microsoft into the world's most powerful technology company.
这位执掌谷歌的理性计算机科学家要比热切急迫、中途辍学的盖茨平易近人得多，后者将微软打造成了世界上最强大的科技公司。
The real James Webb has a full head of hair and a vigorous look to him, like he could drop you to the floor with one chop of his meaty hand.
而真的詹姆斯·韦伯看上去精力充沛，一头浓发，大手一挥就能把人扇到在地。
The advantage of this report is that it turns the problem of climate change on its head by asserting the need to act to avoid a major economic crisis (a 20 % drop in production).
本报告好在它将气候变化作为首要问题，强调必须采取行动避免出现生产总值下降20 %的重大经济危机。
Slowly drop your head to the left, trying to touch your left ear to your left shoulder.
慢慢地把头偏向左边，试着让左耳接触左肩膀。
Myra had let her shawl drop from her head and back upon her shoulders. Patrolman Casey's voice changed, and his eyes became hard, 25)glittering steel.
迈拉从头上把披肩拿下来，披回到肩膀上。这事，凯西警官的声音突然变了，眼神变得锐利起来，像钢铁般闪闪发光。
Your oxygen mask is above your head. It will drop down automatically in case of an emergency.
氧气面罩储藏在您座椅上方。发生紧急情况时，面罩会自动脱落。
Benzene homologues in water were separated and enriched by head-space single-drop microextraction and determined by gas chromatography.
采用顶空单液滴微萃取样品处理方法分离富集水中苯系物，用气相色谱法进行测定。
He said: "to prove it, I would go up on the balcony and drop a pound of feathers on your head and then drop a pound of lead to let you say which is the heavier."
他说：“为了证明这一点，我会到阳台上去把一磅羽毛扔到你头上，然后扔下一磅铅，再让你说那样重谢吧！”
To arch the neck and stimulate the cervical spine, lengthen the neck, drop the head back, lift the chin, and open the throat;
弯曲颈部并刺激颈椎，拉伸颈部，头向后仰，抬高下巴，打开喉咙；
The way to stop a horse from bucking was to get his head up——he had to drop it to kick out with his hindquarters——and then send him forward. 《HALF BROKE HORSES》P93.
阻止马撂蹶子的方法就是拉缰抬起它的头——这时它不得不停止用后驱后踢——然后给他驱动向前的力量。
Your oxygen mask is in the service compartment over your head and it will automatically drop while there is decompression.
您的氧气面罩储藏在您头顶上方，在客舱失压时，会自动落下。
If oxygen is needed, masks will drop down from the panel just above your head. Pulling the mask down will start the flow of oxygen.
如果需要吸氧的话，拿面罩可以拉下你头顶上方的夹板。
One drop of detergent liquid the size of a pin head destroys surface tension in 1 liter of water.
一滴针头大小的液体洗涤剂可以破坏一公升水的表面张力。
Advance in the research of pressure drop computation, pressure measurement and pressure control in extruder head was described.
介绍了挤出机机头中压力的计算方法、测量技术和控制技术的研究进展。
Infants and children :Tilt child's head backwards and squeeze one drop into each nostril 1 to 3 times daily .
用法：使小孩脸部向上，每个鼻孔滴一滴，每天1至3次。只用于鼻腔。
The head of the main Syrian opposition movement, Burhan Ghalioun, says he has failed to persuade Russia to drop its opposition to international sanctions against Syria.
叙利亚主要的反对运动领导人BurhanGhalioun称，他未能劝说俄罗斯放弃反对对叙利亚的制裁。
The sapphire beads (1) are spherical, ellipsoidal, water drop-shaped, rhombic pillar-shaped or wheat head-shaped.
所述的蓝宝石珠(1)为球形、椭球形、水滴形、菱柱形或麦穗形。
Most of the drop is due to people giving up looking for work, said Jose Manuel Salazar-Xirinachs, head of director of Labour market analysis at the Geneva-based ILO.
总部位于日内瓦的国际劳工组织的劳动力市场分析部门负责人若泽·曼努埃尔·萨拉萨尔-西里纳齐斯认为，失业率低于预估值的主要原因是放弃找工作的人增加了。
So I'll drop of my bags at the hotel, change into my swim suite, than head straight out to the Great Barrier Reef!
所以，我把行李送到宾馆后，换上我的泳衣，就直接往大堡礁出发咯！
So I'll drop of my bags at the hotel, change into my swim suite, than head straight out to the Great Barrier Reef!
所以，我把行李送到宾馆后，换上我的泳衣，就直接往大堡礁出发咯！
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