Indocarbon
靛炭(一种硫化染料)
🗣️ 情景例句
I never understand what you are talking about, maybe it's the language barrier.
我从不知道你在说什么，也许这就是语言障碍吧。
You're wasting you breath.
你在白费口舌。
Great efforts ensure the success of our work.
巨大的努力确保了我们工作的成功。