Clappet (valve)
[化] 止回阀
🧩 词语组成解析
[建] 止回阀
🗣️ 情景例句
She's very pretty.
她很漂亮。
We are not born for ourselves.
人生非为己。
We can give you a discount if you order for immediate shipment.
如果你的订单是马上出货的话，我们可以打折。