中英释义：
他在跑步时突然倒下了。
He suddenly fell while running.
你经历过在跨越一半时突然倒下或是抖动的栏杆吗？
Have you ever vaulted a rail or a fence that suddenly gave way or wobbled as you were halfway over it?
他的医生说，昨晚他在他的朋友为他画素描时突然倒下，两个小时后去世，在此期间一直没有恢复意识。
His physician stated last night that he collapsed while a friend was making sketches of him and died two hours later without regaining consciousness.
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突然
suddenly; rudely; cold; overnight; sharply; bang; short; dead; nowhere; unceremoniously; sudden; rude; abrupt; dramatic; unexpected; lightning; steep; snap; untimely; unannounced; precipitous; sneak; galvanic; drastic; convulsive; jerky; hurried; all of a sudden; out of the blue; all at once; with a jump; with a bang; apropos of; in your tracks; in a hurry; just like that
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倒下
fall down; fall; collapse; fell down; come down plump