每天十个短语「TEN phrases each day」 1. be held in position 被固定 2. weather forecast 天气预报 3. agricultural commodity 农产品 4. with regard to 关于 5. viral transmission 病毒传播 6. cover up 盖上，掩盖 7. sound asleep 酣睡的 8. rotating presidency轮值主席 9. retaining one's title 卫冕 the defending champion卫冕冠军 10. mortgage/house slave 房奴 晚安