You have to be comfy on camera but this is your first chance to say hello to mom and dad on camera.

在镜头前表现得自然点儿,因为这是你第一次在电视上跟爸妈打招呼。

哈佛公开课 - 计算机科学课程节选

But I think the more you meet people, here it's, the more you say hello, the more it's familiar.

但我想，你见的人越多，你说的“你好”越多，你就会越发熟悉这一切的。

和纽约的留学生 - SpeakingMax英语口语达人

So we'll say hello to you later, if need be.

所以我将随后跟你说hello，如果需要。

哈佛公开课 - 计算机科学课程节选

I stepped away for only 15 minutes to say hello to everyone.

我走开了15分钟跟大家打招呼。

Where 实战 - SpeakingMax英语口语达人

There's a whole bunch of blocks that we'll look at in more fun detail on Friday but I'm going to pick the easiest one here and I'm going to type Hello CS50 in this string, "Hello CS50", zooming in say how nice the puzzle pieces are nicely interlocked?

今天我们看到的各种图块,到下周五我会仔细讲解其中的精妙之处,但今天我只想举一个最简单的例子,我要在这儿键入字符串，放大窗口，然后看看这漂亮的图形和文字,是如何美妙地连结在一起的？

哈佛公开课 - 计算机科学课程节选