Btu
基本传输单位
🗣️ 情景例句
I heard that some tours actually go down into the canyon. Is that true?
我听说有的旅游团真正下到峡谷里去了。那是真的吗？
Please fill in this application form.
请填这张申请表。
I do not care whether it rains or not.
我不管天会不会下雨。