1.wee hours 凌晨
Going to bed in the wee hours and snoozing until noon only disrupts the brain's clock further.
凌晨上床睡覺,一直睡到第二天中午,只會進一步破壞大腦的生物鐘
2.too close to call 勝負難分
In the Senate, the count is too close to call at this point.
參議院現(xiàn)在的票數(shù)還難分上下
3.on the grounds that 基于……理由
The case was dismissed on the grounds that there was not enough evidence.
此案以缺乏足夠的證據(jù)為由被駁回
4.hinge on 取決于……
Does not success or failure hinge on this?
成敗之機,其在斯乎?