Underclay

n. (煤层下的)底黏土层

🗣️ 情景例句

Michigan scored a touchdown.
Michigan队达阵得分。
Yes, I think so.
是的，我认为是。
For one thing they keep the water clean.
一来，水下植物可以保持水的清洁。
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🔤 更多 U 开头的单词

uint
umbrella fern
under plain cover
underkill
unisolvent
United States President
unstarred nonterminal
up in
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