Tubes
n. 管子, 导管；管状虫；伦敦地铁（tube的复数）
🗣️ 情景例句
Please declare anything you're unsure of.
申请报告有你没太明确是否需要申报的东西。
They've promised to keep both we quality and the quantity of the 300 bicycles in conformity with the contract stipulations.
他们已承诺那300辆自行车的质量和数量一定与合同规定相吻合。
I repeated my question several times and at last he understood.
我把问话重复了很多遍。他终于听懂了。