Constant quantity
恒量，常数
🧩 词语组成解析
🗣️ 情景例句
I bet I can go one hour in your class this morning and not feel a thing!
我打赌我今天上午到的健身班运动一小时之后丝毫不累。
A new bicycle is out of the question - we can't afford it.
买新自行车的事谈不上 —— 我们买不起。
The man went to great lengths to prove that the diamonds were real.
那人竭力想证明那钻石是真货。