用英语中的a&8943；of&8943；造句十个

2. We call -a the additive inverse of a.我们称-a为a的加性逆元素。3. A subset S of a ring A is a subring of A.环a的子集S叫作a的子环。4. I'm calling on behalf of A Box Company.我代表a盒子公司打这电话。5. That case involved section 211(c)(1)(A)...