Preoiler
预先加油器, 预润滑器
🗣️ 情景例句
I have been exposed to languages such as English, Spanish, and French.
我接触过英语、西班牙语和法语。
Good-bye,Bill.
再见，比尔。
The English understand each other, but I don't understand them! Do they speak English?
英国人之间相互听得懂，可我却不懂他们的话！他们说的是英语吗？