单词：jettisoning
音标：[d'ʒetɪsnɪŋ] ；
v. 抛弃, 丢弃( jettison的现在分词 ); 投下
v throw away, of something encumbering
v throw as from an airplane
v throw as from an airplane
词型变化：名词复数形式 : jettisonings