Hydroseal
液封, 水封, 液压密封
🗣️ 情景例句
You are a terrific instructor, Jack.
你真是个了不起的教练 Jack。
The milk is spilled.
木已成舟。
We can make the price lower if you would order a bit more.
如果你单子下多一点，我们可以减价。