We had to drain the oil out of the engine.

　　我們必須把發動機里的機油全部放掉。

　　The US dollar went through a difficult time, in company with the oil market.

　　美元與石油市場同時經歷了艱難時期。

　　The price of oil increased.

　　石油價格上漲了。

　　Oil does not mix with water.

　　油不融于水。

　　Oil does not blend with water.

　　油不融于水。