[英文片語佳句] 2012.06.14

[011]

...at the drop of a hat 

動不動就…

[012]

pose a ... challenge to...

立下…挑戰

[013]

a study show that...

研究顯示…

[014]

in time with

隨著

[015]

...still remain to be seen

...仍有待觀察