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Those who wonder if the glass is half full or half empty miss the point. The glass is REFILLABLE.
那些想知道这水杯是半满还是半空的人们都忽略了一点：这水杯是可以再装满的！
单词记忆:
refillable adj. 适于再装的（如包装材料等）;
wonder n. 惊奇；惊愕；奇迹；奇观 v. 惊奇；想知道；怀疑 adj. 奇妙的；非凡的
glass half full = optimistic 乐观的
glass half empty = pessimistic 悲观的
