(informal)(of a plan or pattern or behaviour) no longer exist; disappear
(非正式)（計(jì)劃，模式，行為）不再存在，消失
a favourable opportunity for doing something that must be seized immediately if it is not to be missed
有利時(shí)機(jī)，最佳時(shí)機(jī)
an opportunity to attack something that is at risk (especially as a cold war claim that America's land-based missiles were easy targets for a Soviet first strike)
脆弱之時(shí)（尤指冷戰(zhàn)時(shí)期，美國的陸基導(dǎo)彈很容易成為蘇聯(lián)首次攻擊目標(biāo)的論點(diǎn)）
organs of sense, especially the eyes
心靈之窗（尤指眼睛）