重點講解：
1. be based on 以…為基礎；
例句：And ask yourself how much of that bold prediction is based on reliable numbers and how much is outright guesswork.
并且問問自己，那個大膽的預言多少是根據可信的數據，多少是徹底的臆測2[57afP2v6ORV(x7。
2. in terms of 在…方面；從…角度看；根據…來說；
例句：The side effects of this treatment can be devastating in terms of weakness, fatigue and a decrease in quality of life.
這種療法的的副作用是毀滅性的，表現為體質虛弱，疲乏無力，和生命衰減NZ,g#7y2qiF[。
3. off the top of one's head 不加思索地；來不及思索地；
例句：It was the best I could think of off the top of my head.
這是我一時所能想到的最好的辦法0_=e,6tO8Y。
4. in front of 在…面前(做或說)；當著…的面；
例句：They never argued in front of their children.
他們從來不當著孩子的面爭吵VwuK%B%xg#O1)32fl。