a bolt from the blue 晴天霹雳) C# z4 o$ [3 x& b4 o6 X
a piece of cake 轻而易举9 w- C" W7 r/ Z8 a. V
above board 光明正大3 F$ i0 Q2 b* Y0 M% |% f0 Y
against the clock 分秒必争7 ], ?. }! N$ r% E `- y( j5 n4 E5 t8 b
all thumbs 笨手笨脚 ; ^. s7 i/ T+ ^7 M- Z2 l0 dall wet 大错特错 6 F( t& j/ i2 U4 tants in sb.'s pants 坐立不安, Z& p- Y, m5 n8 p
apple-pie order 井然有序