Pentachloroethane
五氯乙烷
🗣️ 情景例句
Go ahead, Philip.
去吧 Philip。
Will it be convenient for you to explain your plans to him?
你向他解释计划将是方便的吗？
We tramped through the wood for over two hours until we arrived at a deep stream.
我们在树林中跋涉了两个多小时，到了一条深溪边。