第一個(gè)是 a wet blanket.它的意思是"潑冷水的人,掃興的人" a person who is not enthusiatic about anything and who stops other people from enjoying themselves

she was such a wet blanket at the party that they never invited her again.
她在那次聚會(huì)掃了大家的興,之后再也沒人邀請(qǐng)她了.

第二個(gè)短語是:a fly in the ointment,意思是"掃興的人,煞風(fēng)景的事物". a person or thing that stops a situation, activity, plan from being as good or successful as it could be

We lead a very happy life here. The only fly in the ointment is that there's too much traffic on our road.
我們?cè)谶@兒過得很快活,唯一美中不足的就是住處旁邊馬路上的車輛太多了.