Supply cannot meet demand; demand exceeds supply.
供供给，供应；求需求，需要。供应不能满足需求。
巴金《忆觉醒与活动》当时在成都新的书报很受欢迎，常常供不应求。”
During the holiday season, the popular toy was in such high demand that it was completely sold out everywhere.
Learn the next connected idiom: 供不应求 (gōng bù yìng qiú) → 求同存异 (qiú tóng cún yì)
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