He popped in to say hello.

他突然出现说了声你好。

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Most people recognize the need to pay a golden hello to attract the best.

大多数人都意识到，吸引最好的人才要使用高额的应聘金。

《柯林斯英汉双解大词典》

The magazine 'Hello!' gave rise to a number of me-too publications.

《你好！》杂志带动了许多效仿它的刊物问世。

《牛津词典》

Since 1979, every McDonald's "Happy Meal" for children has included an enticing toy along with the food, from Star Wars action figures to Hello Kitty watches.

VOA: standard.2010.06.24

So if you haven't already, just glance at the person next to you, or say hello if you don't know them.

如果你还没有做好，那就看看你旁边的人,如果你不认识他们就跟他们打个招呼。

哈佛公开课 - 计算机科学课程节选

Here, you come here, you try to tell people hello, they wonder if you're crazy.

在这里，你在这里，你试着跟别人说“你好”，他们却会怀疑你是不是疯了。

和纽约的留学生 - SpeakingMax英语口语达人

Because, for a reported half a million pounds, they sold their story to Hello magazine.

BBC: A thoroughly modern royal wedding

Talking to Hello magazine, Mr Opik admitted they were "the oddest couple in Britain", but said the relationship was "not some sort of joke".

BBC: NEWS | UK | Northern Ireland | MP Opik 'flattered by happiness'

Before I do so, I want to say hello to two people in the hall with you tonight.

NPR: Transcript: President Bush At The RNC