解释下列词语。

①确凿：                                                      _ 

②轻捷：                                                        

③陌生：                                                        

④质朴：                                                        

⑤鉴赏：                                                        

⑥渊博：                                                        

⑦人迹罕至：                                                

⑧人声鼎沸：                                                

中餐宴会一般使用两种酒：一种是酒精度数较高的烈性酒；另一种是酒精度数较低的果酒。饮料一般为茶水、果子汁或矿泉水。