Pentamethylene oxide
[化] 氧己环
🧩 词语组成解析
n. [化]环戊烷
oxide
['ɑksaɪd]
n. [化]氧化物;
🗣️ 情景例句
Who's in charge here?
这儿谁负责？
He is attending a morning intensive course four hours a day, six days a week.
他每周六早晨都上一门4小时的速成课。
That is my idea about friendship.
这是我关于友谊的看法。