在30多岁时英文怎么说

在30多岁时英语可以用"in one's thirties"来表示。这个表达方式源自英语中的年龄表达方法，即用"one's twenties"、"one's thirties"、"one's forties"等来表示年龄。

下面是一些例句：

I'm in my thirties now. 我现在30多岁了。
He's still in his thirties, but he's already very successful. 他现在还是30多岁，但已经很成功了。
She started her own business in her thirties and now it's thriving. 她在30多岁时创办了自己的公司，现在发展得很好。