To display a less than sign (<) in HTML, we have to use a character entity.

要在HTML中显示（<）这个字符，我们就必须使用实体字符。

youdao

If you erased a closing tag, typed a tag name incorrectly, or perhaps overtyped a symbol, such as a less than sign (<), you might run into this problem.

如果您误删了一个结束标记，键入的标记名不正确或者多打了一个小于号 (<)，则有可能遇到这种问题。

youdao

The less than side is gonna be a less than sign, and then the word and is going to become not one & but two ampersands back to back, and we'll see why it's two and not one before long.

小于“侧还是用的“小于“,而中间的“and“将去掉,换成两个紧挨着的&符号，但至于为什么是&&而不是,我们以后会提到。

youdao

She says that's more of a reflection on the fact there are less athletes and events in the Winter Olympics than a sign of the recession.

VOA: standard.2010.02.21

The less than side is gonna be a less than sign, and then the word and is going to become not one & but two ampersands back to back, and we'll see why it's two and not one before long.

小于“侧还是用的“小于“,而中间的“and“将去掉,换成两个紧挨着的&符号，但至于为什么是&&而不是,我们以后会提到。

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