为什么没有东西往上掉呢?
It's important to tighten up the wheels properly, otherwise they vibrate loose and fall off.
把车轮拧紧很重要,否则它们会振动而松脱。
A lot of teachers spend weeks playing catch up in the fall to make up for the summer drop.
很多老师在秋季学期花几个星期的时间补上暑假落下的功课。
The boy would then fall to the grass, get up, without looking back at his mother, run as fast as he could, again, still with a smile on his face, as if nothing had happened.
然后,小男孩摔倒在草地上,再爬起来,不回头看他的母亲,再一次以最快的速度跑起来。他的脸上仍然挂着微笑,好像什么也没发生过。
If it is displayed on such occasions, do not allow the flag to fall to the ground, but let it be carried high up in the air to form a feature of the ceremony.
如果在这种场合展示国旗,不要让国旗掉到地上,而是让它高高地悬在空中以构成仪式的特色。
This allows you to move freely, but it will hold you up if you fall.
这可以让你自由移动,但如果你摔倒了,它会把你托起来。
Soft music can help us fall asleep faster and wake up less during the night.
轻柔的音乐可以帮助我们更快入睡,夜间醒来更少。
It was several years before someone came up with the idea of removing the bottom of the basket and letting the ball fall through.
过了好几年,才有人想到要去掉篮筐底部,让球掉下去。
Afraid that in her unclear state of mind she might fall off the rock to her death, Grant climbed on all fours up a tight, narrow path by digging into the earth with his fingers and feet until he reached Paula.
担心她在神志不清的状态下会从岩石上掉下来摔死,格兰特手脚插入泥土,四肢并用地沿着一条狭窄的小路往上爬,一直爬到宝拉身边。
The latest prototypes from Japan are able to help the elderly to get out of bed or get up after a fall.
来自日本最近刚研发的原型机器人可以帮助老人起床或是跌倒后扶老人起来。
Last fall I stayed up all night in Colombo, Sri Lanka, writing the manuscript for the Working for Yourself guide.
去年秋天,我经常在斯里兰卡的科伦坡工作至深夜,书写个人指南的脚本。
We had clean energy on the formal agenda in the fall, and it may well come up again this coming fall.
在去年举行的秋季年会上,我们将清洁能源问题列入了正式议程,今年秋季很可能在此列入正式议程。
For such short exposures, the rear curtain starts to fall, covering up the sensor before the front curtain is even fully open.
在这样短的曝光下,后幕帘落下,在前幕帘完全打开前遮蔽感光元件。
When entrepreneurs grow up, however, they often fall into management mode and let their left-brain subordinates take over.
而当企业家不断上升进入管理层之后,他们的工作就被他们用左脑思考的下属接管了。
Most observers reckon the industry’s revenue could fall by up to a fifth in 2010 as the exceptional market conditions that followed the bail-outs have faded.
一些观察家称,随着市场环境在拯救行动后变得很好的情况开始衰减,这一行业(银行业)的收入在2010年可能会下降逾20%。
The compression of the programme leaves little fat and no chance to catch up if you fall behind.
整个项目的压缩,给你留下了很少的空闲时间。如果你落下了,就没有机会再追赶上去了。
Do you have vivid dreams or hallucinations as you fall asleep or wake up?
当你醒来或睡觉时有过栩栩如生的梦境或幻觉吗?
This is because the top of the troposphere is normally very cold, causing ascending water vapour to freeze into ice crystals that drift and fall, rather than continuing up into the stratosphere.
这是因为对流层的顶端通常极其寒冷,上升的水蒸汽凝结成飘落而下的冰晶,而没有继续上升进入平流层。
But what counts is how things look from the perspective of the children - whether they feel just as loved when they mess up or fall short.
但真正重要的是孩子们感受到的是什么样子—他们是否不管做对、做错或做得不够好都感受到了父母不变的关爱。
Republicans already counting the seats they will pick up this fall should keep in mind Obama has a big card yet to play.
共和党人已经开始盘算今年秋天将要拾回的席位了,但他们应牢记奥巴马还有一张大牌要打。
When you started to make me fall in love with that boy, you mixed up my life.
打从你开让我爱上那个男孩,就把我的生活都打乱了。
There’s no question that this zeal for deregulation set Britain up for a fall.
毫无疑问,这种对放松管制的巨大热情将英国送上了衰退的轨道。
The value of foreign exchange reserves, meanwhile, will fall if and when the renminbi goes up.
与此同时,如果人民币升值,外汇储备的价值就会应声而落。
Even as steel mills around the world fall silent, mining's rumour mill is cranking up again.
正当世界各地的钢厂陷入沉寂之际,传闻中的采矿业工厂又在跃跃欲试。
Your body loves routine, and sleeping similar hours each day helps adjust your circadian rhythms, so that you naturally fall asleep and wake up refreshed.
你的身体爱死了规律,而每天睡差不多小时的觉帮助你调节昼夜节律,因此你能自然入眠,并精神焕发地醒过来。
As long as there is a steady supply of rising air, cloud droplets are buoyed up and can't fall.
只要有持续供应的上升气流,云朵中的小水滴就会漂浮着而不会降落。
As long as there is a steady supply of rising air, cloud droplets are buoyed up and can't fall.
只要有持续供应的上升气流,云朵中的小水滴就会漂浮着而不会降落。
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