在绝经期 In Menopause

你已经在星期一 you've had it on monday

经常在星期天看电视 Often watch TV on Sunday ; Often in a Sunday watching TV

在经过前期 Through Precedent

他经常在星期二工作吗 He works frequently on Tuesday ; He often Tuesday work

经常在星期天植树 Regular Sunday tree planting ; Often planted on Sunday

在经济衰退期 during the economic downturn

在经济繁荣期 During The Boom

在经济发展期 During An Economic Expansion

他经常在星期天去爬山 He often Sunday to climb