Polyacetal
[化] 聚缩醛
🗣️ 情景例句
Work harder and practice more.
要更加努力地学习，更加勤奋地操练。
Wisdom in the mind is better than money in the hand.
手里有钱财，不如胸中有文才。
How many players are there in a team?
一个队里有多少名队员？