You can't beat it. 　这是第一流的，比不上的。

You can't beat me. 　表示自己了不起。
例句：When it comes to playing football, you can't beat Billy.
论踢足球，没有人比得上比利。

ups and downs 　盛衰，浮沉
例句： Life is hard．There are a lot of ups and downs in one's life.
生活是艰辛的，生活中充满了大多的盛衰的浮沉。

turn the cold shoulder on 　冷淡
例句：He will not turn the cold shoulder on me when I am in trouble.
他不会在我困难时疏远我。

through and through　 完全地，充分地
例句：You can trust him，for he's honest through and through.
你可以信任他，他是真正诚实的。

silly as a goose　 像鹅一样蠢
例句：Since he is as silly as a goose, he will not get a promotion.
既然他如此的不开窍，他肯定得不到提升的。

pull one's leg　 愚弄
例句： If you remain stuck-up, they will often try to pull your leg.
假如你还是目中无人的话，他们会常常想愚弄你的。