WHO estimates the global health worker shortfall to be over 4.2 million.
世卫组织预计全球卫生工作者短缺超过420万名。
The man, an experienced worker, puzzled over the slim, silver device.
一位有经验的工作人员，对着这个超薄的银壳设备有些困惑。
The childcare worker kept a good watch over the children.
保姆一直把孩子照料得很好。
Worker bees then take over, secreting wax to build the hive.
下一步轮到工蜂了，工蜂用蜂蜡建造蜂巢。
Worker bees then take over, secreting wax to build the hive.
下一步轮到工蜂了，工蜂用蜂蜡建造蜂巢。
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