Constants
n. 常量, 常数；物理常数（constant的复数）
🗣️ 情景例句
You can catch the ten-twenty train to Grand Central Station.
你能赶上开往Grand Central Station的十点二十分班车。
In books, are embalmed the greatest thoughts of all ages.
历代最伟大的思想都载入史册而不朽。
That's easier said than done!
说来容易做起来难哪！