Pertusion
穿孔
🗣️ 情景例句
Good morning, Ellen.
早安， Ellen。
I would like to talk with someone in charge.
我想请你们负责人讲话。
suggested an idea on which he had been working for many years to the British Government and industrial circles.
他向英国政府和工业界提出了他研究多年的一项计划。