班超经营西域:put one's mind to是认真投入的意思吗

put one's mind to是认真投入的意思吗 fix X in one's mind 请问keep up one's mind+? in one's mind＆on one's mind,把它们俩搞混了 what's the difference between 'on one's mind' and 'in one's mind'? make up one's mind后面跟to do 还是doing? “don't mind my past”是什么意思 请问 Don't mind 是什么意思呢？ hasn't got a penny to one's name what's one and one?