词汇	watch their time
释义	watch their time vi.等待时机,伺机
随便看	teaching by practice teaching by project teaching by research teaching by researching special topic teaching by sand table simulation teaching by showing teaching building teaching-building Teaching building groups teaching building project teaching buildings teaching by building on experience teaching by cases teaching by correspondence teaching by demonstration teaching by dialogues Teaching by different levels teaching by drawing teaching by eorrespondenee teaching by experiment teaching teaching by grading students teaching by information technology teaching by internet Teaching by Interpreting teaching by level