如果想用英语表达“大于30分钟”,可以使用“more than 30 minutes”或“over 30 minutes”这样的句型。例如:
The movie lasted more than 30 minutes.
It took me over 30 minutes to finish the homework.
如果要用英语表示一个数字大于另一个数字,通常可以使用“greater than”或“more than”,例如:
The temperature is greater than 30 degrees Celsius.
I have more than 30 books on my shelf.