1. obey/observe/ keep to the school rules服从；听从
2. object to doing 反对
objection 反对 have no objection to 不反对
objective 客观的,目的 an objective report Your objective is to enter a good university.
3. oblige sb to do = force sb to do 迫使 I'm obliged to you for doing ... 因做…而感激…
