2.水中撈月 to fish in the air
3.千斤壹發 hang by a hair
4.鏡中花 a flower in the mirror
5.水中月 the moon reflected in the water
6.壹心壹意 whole heartedly
7.朝秦暮楚 quick to switch
8.心不在焉 absence of mind
9.隨心所欲 follow one's bent
10.雜亂無章 out of order
11.垂頭喪氣 in low spirits
12.拍馬屁 lick sb's boots
13.挖空心思 rack one's brains