Rashing
煤层底板的软碳质页岩
🗣️ 情景例句
I don't see any breaks or fractures.
我看不出有任何破裂或骨折。
Not only did I forget my train ticket, but I also forgot my passport.
我不仅忘了带火车票，还忘了带护照。
He was never seen again.
后来再也见不到这个人了。