Polyacetals
聚缩醛(树脂)
🗣️ 情景例句
To the corner and then a left?
走到拐角向左转对吗
It is an ill wind that blows nobody good.
使人人倒霉的风才是恶风；此失则彼得；害于此则利于彼；没有使所有的人都受害的坏事。
No, less than that. One and a half teaspoonfuls, please.
不，再少一些。请放一勺儿半。