Don't look a gift horse in the mouth.

馈赠之马，勿看牙口。

Don't look a gift horse in the mouth.

你尽管接受礼物，不必多问。自马口向里头张望。

Recently, one of my friends presented me a 200G hard disk. It is not as good as a larger one, but don't look a gift horse in the mouth, it's better than nothing!

最近我的一个朋友给了我一个200G的硬盘，虽然不够大，但对礼物也不能吹毛求疵，总比没有强。