costly

/ˈkɑːst.li/

形容词

昂贵的，值钱的
a costly item
一件昂贵的商品
造成重大损失（或破坏）的
Building this bridge has already been too costly in terms of lives (= people have been killed while working on it).
就建这座桥付出的生命而言，造这座桥的代价已经太高了。