我怎么知道他会信守诺言呢？How do I know that he will be true to his word?他们信守诺言，离得远远的。They were as good as their word and stayed away.根本不能相信他会信守诺言。He simply cannot be trusted to keep his word....
针对他是否能胜任最高职务展开了争论。There is a debate about his fitness for the highest office.虽然他年纪大了点, 却仍能胜任这项工作.Though a bit too old, he is still adequate to the work.他缺少经验不能胜任这项工作.He is unable to do the job for lack of experience....