Girls always eat like a bird in order to keep a slender figure.

女孩子们吃的很少，为的是保持苗条的身材。

Don’t try to eat like a bird at first. Just eat a little less for now, adjust, and then cut back a little more.

慢慢来，不要想能一蹴而就，只要先比现在少吃一点，然后就会少的越来越多。