1560s, "easily crumbled;" 1570s, "like bread," from crumb + -y (2). The second sense probably accounts for 18c. (and later in dialects) use, of a woman, "attractively plump, full-figured, buxom." Slang meaning "shoddy, filthy, inferior, poorly made" in use by 1859, probably is from the first sense, but influenced by crumb in its slang sense of "louse."
权威例句
1. The house is so old and crummy it's falling apart.
那座房子太破旧,都开始坍塌了。
2. When I first came here, I had a crummy flat.
我刚来这儿的时候,住的公寓简直糟透了。
3. Most of his songs are pretty crummy.
他的歌曲大多糟糕透顶。
4. I want everyone back in Cleveland to be eating their crummy little hearts out.
我想让家乡克利夫兰所有那些烂人都懊悔不已。
5. Here I am at a crummy hotel with no clean clothes, no money and suffering from shock. What a life!