He was then the heartiest and sturdiest boy in the world.

他那时是世界上最诚恳、最坚强的孩子.

辞典例句

A stately liner can sail serenely through turmoil that would capsize even the sturdiest small vessel.

一艘雄伟邮轮可以安然驶过动荡,而小船,即便是最结实的,也不堪一击.

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