Polyesterification
n. 聚酯
🗣️ 情景例句
Spring is the season for romance.
春天是浪漫的季节。
Experience is a school from which one can never graduate.
经验无止境。
So far, no man has travelled farther than the moon, but spaceships without people have reach other parts of the universe.
到目前为止，尚未有人到过比月球更远的地方，但无人驾驶的宇宙飞船已到达过宇宙的其它地方。