Balluster
[刷]丝印板框
🗣️ 情景例句
Licking envelopes.
粘信封。
Besides the required courses, I'm taking an elective in the Lab Science.
除必修科目外，选修科目我选了实验科学。
The Moon is likely to become the industrial hub of the Solar System,
月球很可能成为太阳系的工业中心。