那个女孩瘦弱的外表让她看起来脆弱而精致。

The girl's ___waif-like appearance made her look fragile and delicate.

她在舞台上纤弱的身形让她看起来超凡脱俗且脆弱易碎。

Her ___waif-like figure on stage made her look ethereal and fragile.