func (opt *Option) ArgFloat64Var(val *float64) error
觉得不够好的呢？吐槽的问题主要集中在几个方面：
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Украинцам запретили выступать на Паралимпиаде в форме с картой Украины22:58，更多细节参见体育直播
Customers can pre-order the new 13- and 15-inch MacBook Air with M5 beginning at 6:15 a.m. PST on Wednesday, March 4, on apple.com/store and in the Apple Store app in 33 countries and regions, including the U.S. All models will begin arriving to customers, and will be in Apple Store locations and Apple Authorized Resellers, starting Wednesday, March 11.