海图图式: chart symbolsymbols and abbreviations of chartssymbols and abbreviations on chartsymbolsanda reviatio onchart
经验: 1.(由实践得来的知识或技能) experience 短语和例子经验不足 lack experience; not be sufficiently experienced; 经验丰富 have rich experience; be very experienced; well experienced; 经验之谈 remark made by one who has had