Stopblock
车档，止轮楔
🗣️ 情景例句
Yes, Philip.
什么事 ，Philip？
Would you please give us a rough idea of the quantity you require?
请告知你方大概要订多少？
Now, this is the chemistry lab. Have you been in this lab before?
好啦，这是化学实验室。你们以前到过这个实验室吗？