Blancol
英国军队用来刷白腰带或其它设备的物质
🗣️ 情景例句
Practice tenses as much as possible.
操练各种时态。
I'm very much obliged to you.
非常感谢您。
How long can you hold your breath underwater?
你在水里屏住气不呼吸能呆多久？