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er er mother mother sister sister
er er 妈妈 妈妈 姐妹 姐妹
summer summer teacher teacher winter winter
夏天 夏天 老师 老师 冬天 冬天
My mother is a teacher.
我的妈妈是老师，
She works hard every day.
她每天都努力工作。
My cousin is a worker.
我的表兄是工人，
Now he's on holiday.
他现在在休假。
