Heterocyclic
a. 雜環(huán)的, 不同環(huán)式的\\n[醫(yī)] 雜環(huán)的
??? 情景例句
The whole family decided to spend their holiday in Hawaii.
全家決定到夏威夷度假。
It's faster to go by plane than by boat.
和坐船比，坐飛機是更快的。
It was the last day of the year and a large crowd of people had gathered under the Town Hall clock.
那是一年的最后一天，一大群人聚集在市政廳的大鐘下面。