It's supposed to demonstrate the importance of having fixed units of measurement.

目的是证明用固定的单位进行测量很重。

This experiment proved that watermelons cut with clean knives will not form deadly bacteria when stored in the refrigerator.

这证明，用干净的刀切的西瓜在冰箱里不会产生致命的细菌。

Comic relief is a tried-and-true way of creating the varied emotional texture a compelling story needs.

经过测试证明，用喜剧调剂的方式可以创造出引人入胜的故事所的情绪变化。

So proof of existence, using your brain. It's always a good idea to use your brain every day. Keep it active.

所以存在的证明，用你的大脑。 每天动动脑子总是一好主意。 保持活跃。

" Exactly. So you'd like them to wait and work and keep on loving till they made you relent or plainly proved that it was no use" .

“完全正确。所以你希望他们等待并工作并继续爱， 直到他们让你心软或明确证明这是没有用的” 。