副詞 not to mention:

1. much less
   同義詞：let alone

1. He is handsome and smart, not to mention being a good athlete.
   他長得帥，人又機靈，并且是一位運動健將。
2. He has a big house and an expensive car, not to mention a villa in France.
   他有一所大房子和一輛昂貴汽車，且不說在法國還有一座別墅了。
3. We can't afford a car, not to mention the fact that we have no garage.
   我們買不起汽車，沒有車庫的事就更不必說了。
4. The school's audio-visual apparatus includes a new set of multi-media device, not to mention films, records, etc.
   這所中學的視聽設備包括一套新的多媒體裝置，更不用說電影、錄音等設備了。