Boric acid kills the insects when they eat it .

硼酸杀死昆虫当他们吃。

Give me some boric acid .

给我来点硼酸吧。

But that spray contained no boric acid .

不过这种喷雾中不含硼酸。

That evening , operators filled unit 3 with sea water and boric acid .

当天晚上，管理人员向3号反应堆灌注海水和硼酸。

As an added safety measure , they injected neutron-absorbing boric acid into the core .

同时向堆芯注射可吸收中子的硼酸来作为一种附加的安全措施。