adj.一定( sure的最高级 );无疑的;肯定要做某事的;不容置疑的;
例句:
Hard and honest work is surest way to success.
辛苦而正直的工作是达到成功的最可靠的方法.
One's own hand is the surest and prompt help.
自己动手搞,迅速又可靠.
The surest way to be happy is to be busy.
繁忙是通往幸福必由之路.