Hayley教口语，“还有很大的改进余地”用英语怎么说？

leave a lot to be desired

to be much worse than you would like

还有很大改进余地，还有很大差距

Apparently, Meg's cooking leaves a lot to be desired.

显然，梅格的厨艺还有很大的改进余地。

The film has a very interesting premise and a story that has quite a bit of potential, but the final product leaves a lot to be desired.

这部电影有一个非常有趣的预设和一个相当有潜力的故事，但最终的成品还有很多需要改进的地方。

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