Paranthracite
高变质无烟煤
🗣️ 情景例句
Make sure everybody is at that meeting.
要确定每一位都出席这次会议。
If you can find another pair of tickets we'll have enough for a dozen people.
如果你能再找到两张，我们就可以有十二个人去了。
Recent scientific evidence seems to indicate that this assumption is incorrect.
但近期科学研究发现，好像这种假设是不正确的。