“first order of business”这个短语什么意思?

“first order of business”这个短语什么意思? FIR THE FIRST ORDER 100% ADVANCED AT THE MOMENT OF THE ORDER first trial order 汇票At sight of this First of exchangepay to the order of意思At sight of this First of exchange （Second of exchange being unpaid) pay to the order of .心里明白但是表达不出来.这里exchange&order 翻译：Please rush the first order and send me pictures of the finished machine. 翻译 this equation can be rewritten as a system of coupled first order differential equations uneven firing generates strong forces of half and first order.这句话怎么翻译? First-order System,First-order logic 分别是什么? University 原句是：we are unable to admit you directly to the College of Busi pseudo-first-order reaction翻译 英语翻译the values of correlation coefficients of the rate constant of pseudo-first-order are less than R2 < 0.980. 30% within 60 days after the arrival of the unconditional acceptance of the order and the first in 英语翻译We would like to offer our services on monthly retainer ship of $.1,000/- (ONE THOUSAND DOLORS ONLY) PLUS commission basis.The retainer ship amount is applicable only for the first one year to meet the running expenses to develop the busi first order derivative second order derivative partial derivative什么意思 汇票中的句子翻译.at sight of this first of exchange(second of the same tenor and date unpaid)pay t接上the order of ourselves. order of business是什么意思 be of the order order of payment是什么意思