Unfrequent
a. 不常发生的,不常见的
✅ 同义词
🗣️ 情景例句
I wasn't born yesterday.
我又不是三岁的孩子。
Only three days.
仅三天。
(A light year is the distance which light travels at 186,000 miles per second in one year,
一光年是光以每秒186，000英里的速度在一年内走的距离，