Smm
abbr. solar maximum mission 太阳照射最大区; standard method of measurement 标准测量方法
🗣️ 情景例句
Hot dogs and mustard.
热狗和芥末。
Does it make any difference to you whether we have our lesson at two o'clock or at three o'clock?
我们在两点上课还是在三点上课，你觉得有关系吗？
I insist that you give me my money back.
我要求你把钱退给我。