The knife fell from her nerveless fingers.

　　刀從她無(wú)力的手里落下。

　　Evans had rheumatic fever, missed school and fell behind

　　伊萬(wàn)斯得了風(fēng)濕熱，沒(méi)去上課，功課也落下了。

　　It is important not to let production levels fall.

　　重要的是別讓產(chǎn)量滑落。

　　The results of the survey fell into two distinct groups.

　　調(diào)查結(jié)果分為截然不同的兩組。

　　Students over 25 fall into a different category.

　　25歲以上的學(xué)生屬另一類(lèi)。