重点讲解：
1. nothing really
其实也没什么；没什么；
eg. "Nothing,"he said automatically."Nothing really."
"没什么,"他不由自主地说。"真的没什么。"
eg. When I complimented her, she coloured up a bit and said it was nothing really.
我夸奖她时,她有点脸红,说那实际上不值得一提。
2. at least
至少，不少于；起码，不管怎样；
eg. Aim to have at least half a pint of milk each day.
目标是每天至少喝半品脱的牛奶。
eg. It's not difficult to get money for research or at least it's not always difficult.
争取到研究资金并不难，起码不总是那么难。
eg. If something awful happens to you at least you can write about it.
如果你遭遇了不幸，至少你有东西可写。
