First he nodded politely, and then his face broke into that radiant and understanding smile, as if we'd been in ecstatic cahoots on that fact all the time.

他起先有礼貌地，后脸上露出了那种喜洋洋的、会心的微笑，仿佛我们俩在这件事上早已成了某种默契。

In reading, we may join tourists marveling at incredible power of Niagara Falls, mingle with the happy throngs strolling in the Paris boulevards and experience the bitterness or joy of people in different lands and in different times.

在阅读中，我们可以和游客一起，赞叹尼瀑布那雷霆万钧之势，和喜洋洋的人群一起穿过巴黎的林荫大道，还可以体验不同时代、不同国土上人们的酸甜苦辣。