insurances的例句（insurances在句子中的用法）

• These five kinds of insurances all exist the certain problem. 这五种保险都存在一定的问题.
• First of all, some doctors don't participate in some insurances by definition. 首先, 一些医生 肯定 不会参加某些保险.
• Trace element mixes serve as insurances. 微量元素只是作为一种保障措施.