Impermeable graphite
[化] 不透性石墨
🧩 词语组成解析
🗣️ 情景例句
You work too hard, Susan.
太拼命工作了， Susan。
We'll be on time,won't we?
我们将按时到，是吗？
Sally was very excited because she had never travelled on a train before.
萨莉非常激动，因为她从未乘过火车。