Just think of all the hellos, good-byes and other unnecessary chit-chat you avoided.
考虑一下忽略“你好”，“再见”和其它可有可无的闲聊。
And, researchers say, pleasant environments generally evoke more reciprocal smiles and hellos than unpleasant ones.
研究者说，一般来说，令人愉快的环境引起相互的微笑和问候的机会比令人不愉快的环境更多。
Whatever the reason, my urban hellos were answered far less often than my rural one.
不管出于什么原因，我在城里打招呼得到的回应比在乡村少得多。
Tippy was usually outside, barking an entire paragraph of "hellos" as soon as he saw me come home.
蒂皮平常都等在外面，一看见我回家就吠出一整段的“哈罗”。
They responded immediately to our smiles and hellos.
他们对我们的微笑和问好立即给予了回答。
They responded immediately to our smiles and hellos.
他们对我们的微笑和问好立即给予了回答。
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