唾液淀粉酶的最适ph:no one is wise at all time是什么意思啊?

no one is wise at all time是什么意思啊? no one is there No one enioys ____(laugh) at no one is there 的歌词谁有啊 no-one is there是谁唱的?? 目前的数位相机Which one is no.1 NO ONE IS TOO OLD TO LEARN.什么意思？ I am afraid there is no one more There are no lights on and no one answer the doorbell. They( ) be at home 9 ----You are drinking too much. -----Only at home .No one _____me but you