index setun.变址组指标集;索引集;索引集合例句1.firstly aimed at the establ**hment of r**k models, the index set for model was confirmed.针对风险模型的建立进行建模指标集的确定。2.if the code always begins with the index set to zero, afte...
1、具体含义不同 pay off的意思是偿还,还清债务。pay back的意思是除了表示偿还,还可以表示报复。2、使用场合不同 pay off常用于还清债务的语境中,并且暗含有已经还清的意味,偏口语,使用较广。pay back的意思侧重于报复,带有一定的贬义。例句: they pay off their credit card debt so...
fall off: to become less; decrease (变少;降低)例如:stock prices h**e fallen off. the number of staff meetings fell off after a few months.(股票价格下降了。工作人员的会议在几个月后减少了fall down: to fail to meet expectations;lag ...
run away跑掉:the thief had run away when the policemen came.**来偷已经跑了。离家出走;私奔:he left h** home and ran away at the age of fif**,and has never been heard of since.他十五岁离家出至今杳无音信。(液体);(钱)花掉:there ** a hole ...