李燕锋认为，如果政府和社会在托育服务、生育支持等方面提供更充分保障，减少女性因生育带来的职业和收入风险，一些人或许就不必通过彩礼来为未来预留“缓冲”，彩礼水平也可能随之下降。
In any graphics application trigonometric functions are frequently used. But that can be a little expensive in terms of computational time. While it's nice to be accurate, we usually care more about fast if anything. So if we can find an approximation that's "good enough" and is speedier than the real thing, it's generally okay to use it instead.
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