thirty 四级考研

Thirty is an even number.

是偶数。

thirty brace of grouse.

30对松鸡。

thirty were hurt.

有30受伤。

she's thirty today.

今天她30岁了。

It's fifteen thirty hours.

现在是15点30分。

the thirty-mile haul to Tamanrasset.

到塔曼拉塞特的30英里路程。

The lake is thirty li in circumference.

这湖周围长30里。

there are thirty-three stories in this compilation.

这本故事集里有33故事。

tours are every thirty minutes.

每半小时换一次班。

there were about thirty or forty of them.

他们大概有四。

the man set off at three-thirty prompt.

在点半准时出发。

she was thirty-nine rising forty.

她39岁多快40岁了。

by nine-thirty the dance was in full swing.

到了九点半的时候，舞会达到了高潮。

thirty or forty years ago.

四年前。

thirty of her school friends.

她的30位校友。

ten to the minus thirty-three.

10的负33次方。

twenty or thirty years ago.

20或30年前。

he was thirty pounds underweight.

他比标准重量轻30磅。

the visas are valid for thirty days.

签证30天内有效。

Thirty guests were present at the ceremony.

有位客出席这次典礼