momentous
🇬🇧/məˈmentəs/ 🇺🇸/moʊˈmentəs/📚 13032 32 1托福雅思If you refer to a decision, event, or change as momentous, you mean that it is very important, often because of the effects that it will have in the future. 重大的
adjective [原级]重大的，重要的
These same cycles of change had momentous impacts on the sparse human populations of the region.
这些相同的变化周期对该区域稀少的人口产生了重大影响。
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