引导coll -lg-6不使用6列，而是使用整行

I have the following Bootstrap 3.2 markup. I want to have this particular row to space into 2 columns of 6 spaces. The following doesn't work (it displays on 2 rows) and I can't figure out by reading the 3.2 documentation on the Grid system:I have the following Bootstrap 3.2 markup. I wa