jettison
verb- jettison something
to throw something out of a moving plane or ship to make it lighter （为减轻重量而从行驶的飞机或船上）扔弃，丢弃，投弃 to jettison fuel 投弃燃料
- jettison something/somebody
to get rid of something/somebody that you no longer need or want 摆脱；除掉；处理掉 - jettison something
to reject an idea, a belief, a plan, etc. that you no longer think is useful or likely to be successful 放弃，拒绝接受（想法、信念、计划等）
Word Originlate Middle English (as a noun denoting the throwing of goods overboard to lighten a ship in distress): from Old French getaison, from Latin jactatio(n-), from jactare ‘to throw’, frequentative of jacere ‘to throw’. The verb dates from the mid 19th cent.