He faces the toughest test of his leadership so far.

他面临迄今为止对自己的领导工作最严峻的考验。

This is the toughest crime bill that Congress has passed in a decade.

这是十年来国会通过的最强硬的有关犯罪的议案。

He is the toughest military ruler yet and has responded harshly to any dissent.

他是迄今最苛刻的军事统治者，残酷地回应任何异议。

Malaysia has emerged as the toughest critic of the North's environmental attitudes.

马来西亚已成为对北方发达国家环境态度的最强硬的批评者。

The manticore is the most fearsome of Pandoran predators, and by the look, it might be the toughest carnivore in the known universe.

蝎尾兽是潘多拉星球上最可怕的食肉动物，从外表上看，它可能是已知宇宙中最强悍的食肉动物。