The trip was great, but the weather was a fly in the ointment.

这次旅行很愉快，唯一的美中不足是天气不好。

The meal was delicious, but the slow service was a fly in the ointment.

这顿饭很美味，唯一的美中不足是服务有点慢。

The painting is beautiful, but that small stain is a fly in the ointment.

这幅画很漂亮，但那一小块污渍是个美中不足。

His speech was excellent, but the length was a fly in the ointment.

他的演讲很精彩，唯一的美中不足是时间太长了。

The project was successful, but the budget overrun was a fly in the ointment.

这个项目很成功，唯一的美中不足是预算超支了。

You might sigh: It's a fly in the ointment ah!

你也许会叹息：“真是美中不足啊！”

Mobile phones are quite popular nowadays, but they ring at any time in the public areas. It is a fly in the ointment.

现在移动电话很流行，但是塔无时无刻不在公共场合响起，真是大煞风景。