Cerous oxide
[化] 三氧化二铈
🧩 词语组成解析
a. [化](正)铈的, 三价铈的
oxide
['ɑksaɪd]
n. [化]氧化物;
🗣️ 情景例句
when I was about eighteen years old.
那时我差不多十八岁。
It's hard sailing when there is no wind.
没有风难航行。
In place of the great trees which had been growing there for centuries patches of green had begun to appear in the blackened soil.
一片片的绿草开始出现在这片烧焦的土地上，代替了多少世纪以来一直生长在那里的参天大树。