Noncyclic crown ether
[化] 非环状冠醚
🧩 词语组成解析
不定期的, 不经常的, 非周期[循环]的
crown
[kraʊn]
n. 王冠;花冠（有时象征胜利）;王权;（某物的）顶部;
vt. （尤指通过增添成就、成功等）使圆满;为…加冕;使圆满完成;给…以荣誉;
vi. 露顶;
ether
['i:θə]
n. <化>醚;the ether 苍穹;苍天;太空;
🗣️ 情景例句
for his ten o'clock appointment with you.
等着十点钟与你的晤谈。
An inch in a miss is as good as an ell.
错无分大小，有错皆不好。
and a very firm hand must be employed in the early stages.
因此开始阶段需要有一位强有力的老手。