failing
/ˈfeɪ.lɪŋ/
形容词
衰退中的；逐渐减弱的；渐趋失败的
failing eyesight
衰退的视力
/ˈfeɪ.lɪŋ/
名词
弱点；缺点
His one big failing is that he never says he's sorry.
他的一大缺点是从不肯道歉。
/ˈfeɪ.lɪŋ/
介词
如果不行，若无
Buy her some flowers, or failing that, just send her a card.
给她买一些花吧，实在不行，就寄一张卡去。