兴高采烈

on a roll───运气好；超常发挥；做得很顺

be on the ball───提高警惕；全神贯注；机灵

be on the boil───沸腾

ride on a rail───乘火车

Vienna roll───维也纳小餐包

be at a loss───茫然不知

be in arrear───拖欠

Growing cherries is always a roll of the dice for farmers, because if rain falls when the fruits are ripe on the tree, a large portion of them can split and be ruined.───种植樱桃对于种植者来说就像是一场掷骰子的冒险，如果树上的樱桃在成熟的时候恰逢雨天，相当大的一部分樱桃会腐烂变质掉。

China may be leading the world economy out of recession but Brazil is also on a roll.───中国可能是引领世界经济走出衰退的发动机，但是巴西也会是重要的推动力量。

I realized this year that clasees are gonna be hard—so let’s roll down to Atlanta for a party on a Thursday night or jump over to South Carolina for a weekend.───我知道未来这一年的课程将会非常难，但我还是想要在周三的夜里逃到亚特兰大来举办一场疯狂的派对或是蹦到南卡罗来纳去享受一个周末。

By the end of last year he seemed to be on a roll, with 77% of South Africans saying he was doing a good job.───截止去年末，他似乎进展不错，76%的南非人认为他做的好。