他在比赛中获得了第二名。

He won the ___second prize in the competition.

微波炉加热食物需要30秒。

The microwave needs 30 ___seconds to heat up the food.

我支持将会议推迟到下周的提议。

I ___second the motion to postpone the meeting until next week.

我的毛衣脏了，我需要再买一件一样的。

My sweater got dirty, so I need to buy a ___second one.

车速达到30公里时，你可以换到二档。

You can shift into ___second when the speed reaches 30 km/h.