1、come down

(成本、水平或數(shù)量)下降，降低

Interest rates should come down.

利率應該降低。

If you buy three bottles, the bottle price comes down to 2.42 pounds.

如果買3瓶，價格會便宜一些，每瓶2.42英鎊。

落下;降落

The cold rain came down.

下起了冰冷的雨。

The curtain came down after the first act.

第一幕過后，幕布落了下來。

2、go off

對…不再喜歡；失去對…的興趣

Why have they gone off him now?It could be something he said.

“他們現(xiàn)在怎么不喜歡他了？”“可能是因為他的某些言論。”

I started to go off the idea.

我開始對這一想法失去興趣了。

（爆炸裝置）爆炸；（槍）開火

A few minutes later the bomb went off, destroying the vehicle.

炸彈幾分鐘后爆炸，炸毀了那輛車。

進行；進展

The meeting went off all right.

會議進行得十分順利。

The voting went off without any undue irregularities.

這次投票順利進行，未發(fā)生任何違規(guī)行為。