steady航向: -方位指示器 course-and-bearing in ...不变: invariant的: 4次方是 The fourth power of 2 i ...船航向不变: be on her course不变的航向: constant heading下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:航向不变的,即可在微信中查询翻译