athwartship与: take part in; participate in龙骨线: keel-line直: straight; stiff交: hand over; give up; deliver与龙骨线垂直: athwart-ships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:与龙骨线直交，即可在微信中查询翻译
