Eukeratin
优角蛋白
🗣️ 情景例句
If you need any help, I'll be ust over here.
如果你需要任何帮助，我都随时待命。
Do you often play tennis on Sunday?
你常常在星期日打网球吗？
It took the police nearly an hour to get the traffic on the move again.
警察花了将近一个小时才使车辆又开起来。