The tower stands 30 metres high.

塔高30米。

《牛津词典》

5 divides into 30 6 times.

5除30等于6。

《牛津词典》

They've been married now for 30 years.

他们结婚至今已30年。

《柯林斯英汉双解大词典》

This was because of efforts by Patrick Leahy, a senator who has represented Vermont for more than 30 years.

VOA: special.2009.01.05

And, I will have office hours today 30 starting at about 3:30 to 4:30 if you want to see me.

另外你今天如果想来见过的的话,我的办公时间是从3：30到4：

麻省理工公开课 - 固态化学导论课程节选

But where I went to college, it's just over the bridge in the suburbs about 30 minutes.

但我的学校就在桥对面的郊外，差不多30分钟就能到。

与圣地亚哥不一样 - SpeakingMax英语口语达人