在许多国家: in many countries nodding means approval and shaking ones head signals disagreement
教: 教动词(把知识或技能传给人) teach; instruct 短语和例子互教互学 teach and learn from each other; 教学生植物学 instruct students in botany; 你这学期教什么课? what are you teaching this term? 她教我们做实验。 she taught us how to condu
