be bound to必定，一定
to and from来来回回
on schedule按预定时间
at stake在危险中，利害攸关
on behalf of代表…，为了……
on the sly偷偷地，冷不防地
in excess of超过
at random随机地，任意地
on sight一见就…，立即
put into effect生效
get out of control失控
come to a conclusion得出结论
decline invitation辞谢邀请
put into use使用，应用
put into practice落实
be satisfied with满足
hardly…when刚…就…
avoid doing sth.避免干某事
come about发生，出现