1. 水底捞月：食言 go back on one's word | 水底捞月 fish in the air | 熟能生巧 Practice makes perfect.
2. 白费力：fish hawk 鹗 | fish in the air 白费力 | fish in troubled waters 混水摸鱼
3. 水中捞月：Be on tenterhooks 心烦意乱,七上八下,六神无主,手足无措,坐立不安 如坐针毡 局促不安 心里如麻 | Fish in the air 水中捞月 | Cry for the moon 异想天开
4. 白费力气：7.neither fish nor flesh 非驴非马 | 8.fish in the air 白费力气 | 9.a drop in the ocean 沧海一粟