擅长:python、mysql、java
<p>将标签更改为</p>
<pre><code>label="This is a very very\n long label for 200\n pixel wide cb!"
</code></pre>
<p>应该这么做。在</p>
<p>也就是说,输入显式的<code>\n</code>字符。在</p>
<p><a href="https://i.stack.imgur.com/a4i4t.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/a4i4t.png" alt="alt text"/></a>
在</p>