Lower carboniferous
un. 早石炭世\\n
🧩 词语组成解析
lower
['ləuə]
adj. 下方的;在底部的;较低级的;
v. 降低;减少;缩小;
n. 石炭纪, 石炭层\\na. 含碳或煤的
🗣️ 情景例句
He isn't likely to win.
他不可能赢。
Happy birthday!
祝贺您生日快乐！
You could save a lot if you would order a little more.
如果你单子下得多一点，可以省不少的钱。