become one flesh

One Become Old

One-one

one-one (=injective)

one-one mapping

put one one’s thinking cap

Two one one Team

One class elementary school; One room school; One teacher school; Single room school

one class school; one room school; one teacher school; single room school

One room school; One class elementary school; One teacher school; Single room school

One teacher school; One class elementary school; One room school; Single room school

Single room school; One class elementary school; One room school; One teacher school

One Case’ One Meeting system

One College Student for One Village Project

One to one customization marketing

one village,one product program

“one point one calories fee” mode

Adding Lines One by One

address system， one-over-one