他的阿姨患有多发性硬化症已经五年了。

His aunt has been living with ___MS for five years.

她去年获得了化学专业的理学硕士学位。

She received her ___MS in Chemistry last year.

史密斯女士将在下午三点抵达机场。

___Ms. Smith will arrive at the airport at 3 pm.

我最近下载了MS发布的新操作系统。

I recently downloaded the new operating system released by ___Microsoft.