1·I have no use for the sad sack of a man.
叫他走吧，我不要这个不中用的人。
2·There is no room for such sad sack of man.
这里不需要如此一无是处的人。
3·The blobfish is practically all face — a pale, gelatinous deep-sea creature whose large-lipped, sad-sack expression seems to be melting toward the floor.
水滴鱼实际上全身都是一张脸，这种苍白、胶状的深海生物长有大大的嘴唇，忧郁的表情似乎马上就要融化在地板上。
4·Are you a little tired of seeing the same sad-sack faces month in and month out?
每个月都看到同样一脸倒霉相的人，有点烦是吧？
5·John is sad because he just got the sack from his girl.
约翰很伤心，因为他与女朋友吹了。