Tubesheet
[化] 管板
🗣️ 情景例句
I hear that you have a Italy Symphony Orchestra concert on the 15th evening.
听说15号晚上意大利交响乐团要在贵院演奏。
It seems like I always have bills to pay and he never has any!
我看来好像老是有账单，然而他却完全没有。
Has your company done any research in this field?
请问贵公司对此范畴做了任何研究吗？