fixed loop bowline knot有: 5年 fifteen years圈: circle; ring的: 4次方是 The fourth power of 2 i ...滑: slippery; smooth结: p-n junction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:有圈的滑结,即可在微信中查询翻译