怎么分析"it's back into the kitchen to grab my Thermos on the way out the door."
这句话各成分的意义和意思是什么？有没有用到省略？

原文是：

I go back into my bedroom and open up my closet door. I have about 30 dress shirts, 10 pairs of pants, a half-dozen ties, and some sweaters, suit jackets, and t-shirts. I pull out a clean pair of socks and underwear, and then decide which shirt I'm going to wear today. I'm terrible at color coordinating, so I usually bring my wife in at this point to help match my shirt and pants. I put on my belt with the silver buckle and polish my shoes. I put my cell phone and car keys in my front pocket, and my wallet in the back one.

I put on my glasses and check myself in the mirror to make sure I look okay, and then go into the home office to get my bag. I used to carry a more traditional briefcase, but now I just use my computer bag to hold my laptop and my papers. Now it's back into the kitchen to grab my Thermos on the way out the door. I lock the door and then hurry to my car in the garage. I'm usually running late and today is no exception!