我在街上走啊走，大约半小时后我发现自己来到了学校大门口。

I walked and walked along the street, and about 30 minutes later, I found myself at the school gate.

在大约半小时后,服务恢复正常.

Zai after about half hours the service returns to normal.

大约半小时后，他们对学习材料的内容进行了测试。

Then, about half an hour later, they took a test on things in the study material.

在陈列室有这样一条长的队因此我们必须等大约半小时。

There was such a long line at the exhibition so we had to wait for about half an hour.

七只大鸟在天上飞了大约半小时，然后便回到了池塘，领队的还是雄天鹅。

The seven great birds stayed aloft about half an hour, then returned to the pond, the cob still in the lead.

然后你喊一、二、三，跑，你沿着任何你喜欢的方向跑大约半小时，然后比赛结束。

Then you shout out, one, two three, go, and you run around in any direction you like for about half an hour and then the race ends.

由辛特拉到里斯本的西北部大约半小时车程，是周末游玩的好去处；简直就是梦寐以求的童话之旅。

A half hour drive to the northwest of Lisbon, Sintra is more than a weekend destination; it's a journey into a fairy tale.

把它放入烤箱中，温度为180摄氏度，也就是350华氏度，烤大约半小时，烤到金黄、酥脆、美味可口。

So in the oven it goes at 180 degrees Celsius which is 350 Fahrenheit for about half an hour until golden and bleeping and delicious.