"长得完美"可以用英文表示为"look perfect"或"be perfectly beautiful/handsome". 这个短语的来源可能是源自人类对美的追求，即想要看起来漂亮、完美的外表。

下面是一些使用"look perfect"的例句：

She always looks perfect, no matter where she goes. (无论她去哪里，她看起来总是完美的。)
He looked perfect in his suit at the wedding. (他在婚礼上穿着西装看起来很完美。)
She has a perfect figure and always looks perfect in her dresses. (她有一个完美的身材，并且穿衣服时总是看起来很完美。)

下面是一些使用"be perfectly beautiful/handsome"的例句：

She is perfectly beautiful, inside and out. (她内心和外表都非常完美美丽。)
He is perfectly handsome in his tuxedo. (他穿着燕尾服看起来非常完美帅气。)
She has perfectly beautiful features and a perfect smile. (她有完美的五官和完美的微笑。)