感到做某事很随意 feel free tto do sth
由于某种原因 because of sth / for some reason
为了娱乐 for fun/ in order to be fun
就.交流信息 exchange of information on .
潜入水里 dive into the water
起航 单词是sail 短语 set sail
寻找 有很多 search for /look for 等等
控制海域 control area
吹离航道 blow off course 注意是否被动
讨论计划 discuss the plan
陌生的国 unfamiliar place/country
作为.而为人所知 be familiar as / be famous as /be known as 等等