1. catch sb. by surprise 讓某人吃了一驚
New Milan man Daniele Bonera has admitted that his sudden move to the Rossoneri did catch him by surprise.
新的米蘭球員達尼埃爾·博內(nèi)拉承認，他轉(zhuǎn)到紅黑軍團他自己也感到很意外-c(XvREnP8YLU09f+YYF。

2. toggle back and forth between 在……和……之間來回切換
if you enter it twice, you can toggle back and forth between two directories.
如果重復輸入該命令兩次，就可以在兩個目錄之間來回切換aY+J;Wp3Zus。

3. revel in 陶醉于
Indeed these unrestrained damsels appear to revel in freedom of every kind.
事實上這些不受限制的年輕女子看來似乎很享受各種各樣的自由8y[EeP,QLg*JJugl=。

4. ratchet up 加劇
The men said they were Indian, but the attacks appeared to ratchet up tensions in an already volatile region.
男子說他們是印度人，但是此次襲擊使得本已敏感多變的地區(qū)更加劍拔弩張s&+;L+UN|%k7td。