You are welcome to vary the diet.
我们鼓励不时变换饮食。
You are welcome to put forward your views.
诸位有什么意见，欢迎提出来。
You are welcome to the loan of my knife.
你可随意借用我的小刀。
You are welcome to use my library.
你可以随便使用我的藏书。
You are most welcome to my humble abode.
竭诚欢迎光临寒舍。