He got a nasty knock on the head.
他头部遭到重重一击。
Be careful you don't knock your head on this low beam.
小心，别把头撞在这矮梁上。
Having suffered a head injury on United's summer tour of the United States and a knock to his shin against Chelsea last week, Hernandez is now back on the treatment table with a dead leg.
小豌豆已经是接连受伤，不仅在曼联的美国夏季巡回赛中头部受创，还在上周对阵切尔西时筋骨受伤，如今又带着腿伤重返伤兵名单。
About a half an hour before she was getting ready to head out for dinner, there was a knock at Ellie's door.
在晚饭前大概半个小时的时候，有人敲响了艾莉的房门。
"We think we know why now; we think we were inducing the wrong immune responses." If we can use this knowledge to induce the right immune responses, we hope to really knock this on the head.
我想我们现在知道为什么了：我认为我们引发了错误的免疫反应，如果我们利用现有知识能够引发正确的免疫反应的话，我们就能一举攻克这个难题。
I must not knock you on the head with it.
我不能拿它敲诸位的脑袋。
Of course, the more literal "do nothing" would also help - Gibson clearly needs to take a break, replenish and knock his head into shape.
当然，越是“什么都别做”越是有帮助-吉普森的确需要休息，重新思考调整一下。
Jon: Knock my cat on the head?! Who would ever do such a thing?
乔恩：敲打我家猫的头部？谁曾经这样做过？
His amnesia was caused by a knock on the head.
他的健忘症是因头部受撞击所致。
The word means literally 'to knock the head'.
这个词字面意思就是“碰头”。
Please do not hold your head high, or you might knock your head against some protruding stalactite.
请别高昂着头，否则你的头可能撞到突出的钟乳石上。
He fainted when he received that terrible knock on the head.
头部受到重击之后，他立刻昏厥了过去。
The nasty knock on the head bereft him of consciousness.
那沉重的当头一击使他失去了知觉。
Mind you don't knock your head (on this low beam).
小心，别（让这根低梁）撞著头。
Mind you don 't knock your head (on this low beam).
小心，别(让这根低梁)撞着头。
He even gave the elephant in the menagerie26 a plug of tobacco, and the elephant didn't knock the top of his head off with his trunk.
他游动物园时居然塞给大象一捆烟叶，可那大象也没有甩开长鼻子敲碎他的脑壳。
Make the pipes with button head align with the joints of external thread, rotate the nut and make it align to the center, knock the nut and screw up the nut.
将焊有球头的管子与外螺纹接头中心相对，旋转螺母使其自动对中心后，敲击螺母使螺母旋紧。
The effect is equivalent to a knock on the head and thus would not be dispelled by changing one's form; it is a mental effect rather than a physical one.
这个效果等同于在头脑上狠敲一下，是个精神效果而不是物理效果。
Next time you call, knock at the door. Don't plunge head first into another person's room.
你下次来访要先敲门，别冒冒失失地撞进别人的房间。
Arshavin has a hamstring problem and Nasri had a knock on his head.
阿尔沙文有一个肌腱问题，纳斯里的头被撞了一下。
She got a nasty knock on the head when she fell.
她颠仆时头部遭到严重碰撞。
Often they are sealed in cages so they don't knock someone's head off when they swing a steel arm.
它们往往被封闭在铁笼之内，以免钢臂挥动时磕碰到旁边的工人。
When something interrupts the memory-storage process–like a hard knock to the head–newly formed memories aren't stored for the long run and you can't remember things that just happened.
当记忆储存的过程被打断——就像头被狠狠的敲击。新形成的记忆就不会持续很久，所以就不能记住刚刚发生的事情。这叫作顺行性遗忘症。
When something interrupts the memory-storage process–like a hard knock to the head–newly formed memories aren't stored for the long run and you can't remember things that just happened.
当记忆储存的过程被打断——就像头被狠狠的敲击。新形成的记忆就不会持续很久，所以就不能记住刚刚发生的事情。这叫作顺行性遗忘症。
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