Pitprop
n. 坑木, 坑道支柱
🗣️ 情景例句
May I make a suggestion?
我可以提个建议吗？
Which would you prefer, a smoking seat or a non-smoking seat?
你喜欢哪种，吸烟座还是禁烟座呢？
You are walking too fast. I can't keep up with you.
你走得太快，我跟不上。