The best thing to do when entering unknown territory is smile.踏入未知地带最好的对策就是微笑。It is not unknown for valuable display items to go, ahem, missing.贵重的展品，呃哼，丢失的话，会众人皆知。Ignorance of people brings fear, fear of the unknown.人们的...
And there is the dread of the unknown, above all , the awful fear of hellfire.而且还有对未知的恐惧; 尤其是对于炼狱的惧怕.There at the fording in the little boat the unknown man plays upon his lute.浅滩的小舟上有个不相识的人正弹着琵琶.An unknown man has stole...
他跟顾客打招呼时直呼其名，并问他们身体可好。He greets customers by name and enquires about their health.他向他们挥一下手，热情地笑着向他们打招呼。He greeted them with a wave and a broad smile.他们俩都笑着跟朋友们点头打招呼。Both of them smiled and nodded at friends....