Nothing is more costly, nothing is more sterile, than vengeance

没有比复仇更昂贵、更没用的事情了。

Purchases of food for emergency aid are also now more costly.

购买紧急援助类粮食的成本也很高。

But it could also make the battles over patents nastier and more costly.

但这也会使得专利之争更卑劣更烧钱。

American lawyers, in punishing doctors' mistakes, make medicine more costly.

美国的律师在让医生的过错受到惩罚的同时，使医药费用更加的昂贵。

After-the-fact education is usually more costly than what is provided before.

事后教育通常会比事前教育付出更大的代价。