Ischnacanthidae
坐棘鱼科
🗣️ 情景例句
Yes, indeed.
对， 没错。
That's terrible!
真可怕！
If they knew how difficult it was to drill through the hard rock, they would lose heart.
如果他们知道了钻透那坚硬的岩石有多么困难，他们会丧失信心的。