Siphonein
n. [生化]管藻素
🗣️ 情景例句
I'm too sick to even get out of bed.
我病得都下不了床了。
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。
Oh, it doesn't matter!
噢，没关系！