为了测试蜜蜂是否识数，研究小组在每个盒子上用2到6个几何图形作为不同盒子的代号。
To test the bees' numeracy, the team marked each chamber with a "room number" consisting of 2 to 6 shapes.
研究小组发现，当一只从健康蜂巢中飞出的蜜蜂，如果同样停驻黄蜂之前带过的花上，那么它大约会在一周内患上病毒。
When bees from a healthy hive visited the same flowers previously visited by sick bumblebees, the colony contracted the virus within a week, the team found.
在研究小组另一项试验中收集的野生蜜蜂和黄蜂中发现的病毒，可能会成为蜜蜂感染病毒的证据。
In a separate experiment, the team collected and examined wild bumblebees and wasps and discovered molecular evidence of viruses that can infect honeybees.
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