to the best of one's power

英语谚语 附上其来历 英语介绍... ... 不惜费用 spare no expense 不遗余力 to the best of one's power 不在话下 let alone ...

?EFY每日短语?之... ... / to 必然，一定 to the best of one's power 就某人力所能及 to the best of one's knowledge 就某人所知 ...

... be certain of/about 肯定，确定 to the best of one's power 就自己能力所及 to the best of one's knowledge 就个人所知 ...