帮忙看一句英语Thisprocedureshouldbesatisfactoryformostportworkersworkingonshipsastheymoveinandoutoftheholdduringcargooperations.However,certainportworkers,suchasthoseengagedonlashingorunlashingvehiclesonro-ros

Question

帮忙看一句英语
This procedure should be satisfactory for most portworkers working on ships as they move in and out of the hold during cargo operations.However,certain portworkers,such as those engaged on lashing or unlashing vehicles on ro-ro ships or forklift truck operators in sto-ro operations,may be present and vehicle exhausts emitted for the entire work period.
帮我分析一下这句话的意思,主要看一下may be present and vehicle exhausts emitted for the entire work period.这句的意思.

Answer 1

This procedure should be satisfactory for most portworkers working on ships as they move in and out of the hold during cargo operations.该程序将满足绝大多数码头工人在装卸货物时船上作业的需要.然而,有些码头工人必须实地操作,比如那些在滚装船或者在sto-ro（不知道是什么）操作中的叉车司机,整个作业过程中车辆会排出尾气.
你不明白的那句话,你把主语和谓语连起来就明朗了certain portworkers may be present and vehicle exhausts emitted for the entire work period.
be present在场
vehicle exhausts 车辆排气