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单元三 s2
单元三(水都去哪儿了) meaning
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abigail
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Cards (13)
因素
factor
水喉
water tap
资源
resource
艰巨
tough
昂贵
expensive
消耗
consume
干旱
dry
扩大
expand
蓄水池
reservoir
洗澡
bath
浴室
bathroom
趋势
trend
开源节流
reduce expenditure