🗣️ 情景例句
No one knows for certain what happened, but it's a fair bet that it was not an accident.
没有人知道究竟发生了什么，但几乎可以肯定这并非意外。
If he doesn't, will you fix it?
如果他不，你会修理它吗？
Our knowledge grows and the universe develops.
我们的认识在增长，宇宙也在发展。