重点讲解：
1. right now 现在；此时此刻；
例句：You might as well tell him right now.
你不妨现在就告诉他8pELuG67LLx=0h;。
2. less than （用在数字或数量前）少于，低于，比…少；
例句：In less than seven days the infested plants had recovered.
不到7天时间，受虫害侵袭的植物就复原了O#jpjTAl%Uw.k。
3. be into sth. 对…很感兴趣；极喜欢；
例句：All my buddies who are into reggae wear colorful hats and have long hair.
我所有喜欢雷鬼音乐的伙伴都带着颜色鲜艳的帽子，留着长头发j1_8)bdb%dc3。
4. build up （使）积聚；（使）逐渐增加；
例句：We can build up the speed gradually and safely.
我们可以逐渐稳妥地提高速度xSO~JmY7W&,(45。
5. a couple of 两个；几个；
例句：I'll be back in a couple of days.
我过几天就回来11PV%xI^3t]hFA,lD31。