If we know around how old the Basin is, I'm not sure that's reason enough to go to the Moon again.

如果我们知道盆地的年龄，我不确定这是否足以成为再次登月的理由。

youdao

I'm not sure people generally realize how old Jython is — it's first release happened in July of 1998.

我不知道一般人是否了解Jython的历史——其首个版本发布于1998年7月。

youdao

"I'm not sure what area of finance I'd like to work in, once I graduate," said the 20 year old. "But I do like that it is relevant to everyday life." It is interesting to see how it pieces together.

“我至今还不能肯定在我毕业后会进入怎样的金融领域工作，”20岁的他说到：“但是我希望将是与我的日常生活息息相关的，因为把每样东西结合在一起是一件非常有趣的事。”

youdao

Later I'm not sure how long, we drove down the A470 - the old road on the opposite side of the valley - and looking across there was a gaping black hole where there was once a loving school and houses.

BBC: 1966: Aberfan - a generation wiped out