🧩 词语组成解析
subclass
['sʌbˌklɑ:s]
n. 亚纲，子集;子类;
两鳃目
🗣️ 情景例句
We want to leave on May 1st and return on May 8th.
我想五月一日走，五月八日回来。
We need skilled electricians.
我们需要有技术的电工。
may have left an automatic messenger behind to await the possible awakening of an advanced civilization.
很可能会在离开太阳系时留下自动化信息装置，等待先进文明的觉醒。