costly
单词辨析：
强调稀有且价值不菲的。
precious vases
稀世花瓶
There is a crown set with precious jewels in his safe.
他保险箱里有一个嵌满贵重宝石的王冠。
较正式用词，指花费太多钱的，尤指超过愿意支付的价钱的。
Such a set of furniture would be extremely costly to buy.
买这么一套家具要花很多钱。
He wanted to know how to avoid costly legal proceedings.
他想知道如何避开昂贵的法律诉讼。
指价格贵的，通常作表语。
Cars are dearer in Britain than in Europe.
汽车在英国比在欧洲要贵。
Everything is so dear now.
现在什么东西都这么贵。
强调花钱多、价格高的。
This apartment is too expensive for me to buy.
这套公寓太贵了，我买不起。
They went to the most expensive restaurant in town to celebrate her birthday.
他们去城里最贵的餐馆庆祝她的生日。
强调十分值钱的。
His wife was wondering where he put their most valuable belongings.
他的妻子很想知道他把他们最值钱的财物放在哪里。
Two valuable paintings were stolen from that museum last night.
那个博物馆昨晚有两幅名贵的画失窃。
相关例句：
Having curtains made professionally can be costly
找专业公司制作窗帘会非常昂贵。
It can be costly to refinance.
再融资有时费用会很高。
Ask a physician, I know the most costly and dramatic measures may be ineffective and painful.
作为一名医生，我深知最昂贵和最激进的手段也可能是无效的和痛苦的。
I certainly try to be more careful in environments where mistakes will be more costly.
对我而言，在错误损失更大时，我肯定会变的更仔细，这和环境脱不开关系。
We need some costly materials.
我们需要某些价值昂贵的材料。
But stable credit is less costly than cyclical banking for businesses and taxpayers.
但对企业和纳税人来说，稳定的信贷比周期性的银行业务成本更低。