期的英語翻譯：

a period of time; expect; sheduled time
【化】 term
【醫(yī)】 period; phase; stadia; stadium; stage; time
【經(jīng)】 term

前的英語翻譯：

former; forward; front; preceding; priority
【醫(yī)】 a.; ante-; antero-; fore-; pro-; proso-; ventri-; ventro-

違約的英語翻譯：

break a contact; break a promise
【經(jīng)】 act in violation of the stipulation; breach of contracts
break an agreement; break one's enaggements; default; in default