4周搞定2000+托福核心词
invariance
常考释义
These pronghorn are notable for the invariance of their migration route and the severity of its constriction at three bottlenecks.
These pronghorn are notable for the invariance of their migration route and the severity of its constriction at three bottlenecks.
来源于：剑雅11-Test3n. 不变性；恒定性；持续性
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