首先定义

first degree───第一级的

first degrees───第一级的

first finger───食指

first officer───大副

ill-defined───adj.不清楚的；定义不清晰的

misdefined───定义错误

well defined───轮廓分明的；意义明确的

This paper has firstly defined the factor struture M/P(M) of commutatiuely residual monoid M by its sub-monoid P(M), then we have studied its properties and given out some isomorphism theorem.───本文首先定义了交换剩余幺半群M相对于其子半群P（M）的商结构M／P（M），然后研究了它的性质并给出了一些同构定理。

firstly defined construction contract risk and the foreseeable risk principle on the basis of the risk's meaning.───首先根据风险的内涵界定了工程合同风险的内涵及可预见性风险分配原理。

If customer provide defined supplier name list, purchasing dept. firstly consider purchase related material from supplier.───如果顾客提供指定的供方名单，供应部应首先考虑从该供方处购买相关物资。

The concept of derived distributions is firstly defined for system with symmetry. Condition for the solvability of our problem is given.───通过定义对称系统的导出分布族的新概念，我们得出了问题可解的条件。

This paper firstly defined construction contract risk and the foreseeable risk principle on the basis of the risks meaning.───首先根据风险的内涵界定了工程合同风险的内涵及可预见性风险分配原理。

A class scheme was firstly defined, in which, every class was decomposed into subclasses if necessary.───首先，制定类方案并分解各个类，据此得到相应的子类；

This paper has firstly defined the factor struture M/P(M) of commutatiuely residual monoid M by its sub-monoid P(M), then we have studied its properties and given out some isomorphism theorem.