Ceratine
角质
🗣️ 情景例句
Hi, Bob.
嗨，鲍勃。
There is safety in numbers.
人多势众。
An even harder situation is to be on the platform in good time for a train and still to see it go off without you.
更难堪的情况是虽然及时赶到站台上，却眼睁睁地看着那趟火车启动，把你抛下。