重点讲解:
1. add up 加;
Add up the figures in this column.
把这一栏的数字合计一下 。
2. thanks to 幸亏;归因于;
Thanks to the angle at which he stood, he could just see the sunset.
由于站的位置视角好,他刚好能看见日落 。
3. in theory 从理论上说;照理说;
In theory, the buyer could ask the seller to have a test carried out.
理论上,买方可以要求卖方进行一次测试 。
4. get down 俯身;跪下;趴下;
She got down on her hands and knees on the floor.
她双手撑地跪在地上 。
vi. 航行,驾驶,操纵 vt. 航行,驾驶