经济学人下载:蜜蜂是最先发明疫苗的物种(1)

His immune system completely broke down and he became very ill.

他的免疫系统彻底崩溃了，他已病入膏肓。

2.in the first place 首先，起初

To make true friends, you need to be friendly to others in the first place.

要结交真正的朋友，首先就要对他人友好。

3.royal jelly 蜂王浆

Royal Jelly is the main source of food for the queen bee.

蜂王浆是蜂王的主要食物来源。

4.team up with 与……合作

He preferred to go into business alone rather than team up with others.

他情愿独自经商，而不愿与人合伙。