Innocuous substance
[化] 无害物质
🧩 词语组成解析
🗣️ 情景例句
Yeah, Grandpa,
对呀， 爷爷。
A man alone is either a saint or a devil.
孤身独处的人可以为圣哲，也可为恶魔。
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。