Cleaningeye
清扫口
🗣️ 情景例句
That's too bad. Bye.
太糟了。再见。
I'm always disappointed when I don't get any mail.
当我收不到任何邮件时，我总是很失望。
he identifies himself with its centre of gravity, its mass, its weight;
他把自身和物体重心、质量、重量融为一体。