However strong you are, there's always someone stronger.; For every able person there is always one still abler.

强中自有强中手， 能人背后有能人。

《新英汉大辞典》

However strong an advocate he may be of a Palestinian state.

美国可能是巴勒斯坦国的坚强支持者。

youdao

However strong your plan and however sure you are of your goals, make room for periodic reassessment.

不论你的计划多么强，也不论你对自己的目标有多肯定，都要为重新考虑预留余地。

youdao

However,the cooling of about one and one-half to three degrees Celsius is only about half as strong as a real La Nina.

VOA: special.2009.09.29

However,snow can become hard and flat as it becomes older or if there have been strong winds.

VOA: special.2010.01.05

Most of the settlers,however, were strong people.

VOA: special.2010.04.15

But, however strong the south's Yes, it is in the north that peace needs to be made.

ECONOMIST: Northern Ireland

However strong the fear of getting bogged down, Mr Berger evidently finds the chaos that would follow America's withdrawal from Bosnia even less appealing.

ECONOMIST: Sandy Berger relives Vietnam

Debt in Europe is however a strong signal for economic mismanagement on an unprecedented scale.

FORBES: Europe's Disintegration: It's Not About the PIIGS or the Euro