Nitrifies
v. 使與氮化合, 用氮飽和, 硝化( nitrify的第三人稱單數 )
??? 情景例句
Drive carefully.
開車時小心。
Skiing is such a difficult sport that it's more work than play.
滑雪是非常困難的運動，真所謂工作高于游戲呀。
South Africa passed further laws designed to make life difficult for non-whites.
而南非則通過了更多的法令，企圖給非白種人的生活造成困難。