Impermanency
n. 非永久, 非永久性, 暂时, 暂时性
🗣️ 情景例句
he'll be an important decision-maker
他将成为一个重要的决策者
I really don't know.
我真的不知道。
Those planning a trip to remote areas, or intending to live in countries where drinking water is not readily available, should know about the various possible methods for making water safe.
那些计划去偏远地区旅行，或在饮用水不现成的国家居住的人，应该知道如何使水适于饮用的各种办法。