76. than necessary 比应该的要冷
The lab was cooler than necessary.
77. That’s easer said than done. 说来容易做来难
We talk about reducing our costs, but it's easier said than done.
78. There is nothing to it. 没什么，很容易
I can run this projector. There’s really nothing to it.
79. with flying colors 成功
A: How did Ellen do on her American History exam?
B: She passed with flying colors.
80. You can bet your life 当然
A: Will Prof. Smith come to class on time?
B: You can bet your life.
