4周搞定2000+托福核心词
不变的；常数的;n. 常数；不变的东西
invariable
常考释义
Unfortunately, it is in the nature of the archaeological evidence, which is almost invariable only a sample of what once existed, that such figures will always be elusive.
不幸的是，考古证据本质上只能是历史存在的一个样本，因而由此得到的数据并不可靠。
来源于：阅读OFFICIAL29 P1adj. 不变的；恒定的；始终如一的
It was a usual though not invariable practice.
虽然不能说是一贯做法，但这种做法的确很通行。
It was his invariable custom to have one whisky before his supper.
晚餐前喝杯威士忌是他一直以来的习惯。
n. 常量；常数【数】
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