Roll up your sleeves; it's world blood donor day.
卷起你的袖子。今天是世界献血日。
The countdown to World Blood Donor Day (WBDD) has started.
世界献血日倒计时已经开始。
Since World Blood Donor Day was celebrated for the first time in 2004
自2004年第一次庆祝世界献血者日以来
Since World Blood Donor Day was celebrated for the first time in 2004
自2004年第一次庆祝世界献血者日以来
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