1.fall apart 破碎,破裂
例句:But having a strong and honest kind of relationship will it fall apart.
一个坚强的和诚实的感情关系将会破碎。
2.fall asleep 入睡,长眠,死
例句:He started to fall asleep; I knew he was exhausted so I stroked his hair and watched him.
他睡着了,我知道他太累了,于是我轻轻地抚摸着他的头发,看着他。
3.fall back on 借助于,依靠,撤退到
例句:Doctors sometimes fall back on old cures.
医生们有时求助于传统疗法。
4.fall behind 落在后面
例句:They charge lower upfront fees than other cards do. But if you fall behind, it's tough.
他们比其他卡收取的预支费要低,但是如果你拖欠还款,那就日子艰难了。
5.fail to do sth 做某事失败
例句:Many people fail to do this and wonder why they cannot concentrate.
很多人做不到这一点,并想知道为什么他们不能全神贯注。
6.fall down 跌倒,摔倒,失败,未能符合要求
例句:There's nothing to be afraid of. The sky won't fall down.
没有什么好怕的, 天不会塌下来。
v. 集中,专心,浓缩
n. 浓缩物