比较级： costlier
最高级： costliest
易混淆的单词： Costly

Running your own servers is inefficient and costly .

架设自己的服务器不仅低效而且昂贵。

Only a handful of nations operate carriers , which are costly to build and maintain .

只有世界上少数的国家有能力建造和维护极其昂贵的航母。

But thumbing its nose looks increasingly costly .

但是被人愚弄似乎更贵。

That is time-consuming and costly .

那是既耗时又代价高的。

Since time can be costly , sacrificing accuracy on occasion for speed might be beneficial overall , solman thinks .

solman想，既然时间是宝贵的，偶尔为了速度而牺牲准确性总体来说很可能是有益处的。