in the red box的意思|示意

Since you haven't imported the Vector type, there will be a symbol in the left margin, a red box with an "x" combined with a yellow light bulb, as shown in Figure 4.

因为没有导入Vector类型，所以左侧空白上将有一个符号，是一个包含“X”和黄色电灯泡的红色方框。(参见图4。)

If there are any errors in your editor, then the upper-right corner of the bar displays a red box.

如果编辑器中有任何错误，则该栏的右上角将显示一个红方块。

The effect was like a primitive version of a hologram: it looked at first glance like a real "talking head" inside the small box, but with red hair, wearing a baseball cap, and speaking in Chinese.

展示效果就像早期的全息影像：第一眼看上去，仿佛小盒子里真有一个长着红发、戴着棒球帽、会说中文的人脑袋。

To enable header compression, select the Compress message headers box, as indicated in the figure by the red arrow.

要启用标题压缩，请选中 Compress message headers 框，如图中红色箭头所示。

Which is in the box, the red one or the black one?

哪一个在盒子里，是红色的那个还是黑色的那一个？

If you add a new file or directory when using an include strategy, it will not be available after packaging, which might cause your plug-in to fail or display the Eclipse default image (red box).

如果您使用包含策略，新加入的文件或目录在打包后是不可用的，这有可能会导致您的插件不能用或者显示出Eclipse默认的图标(红盒子)。