说明： 本工具可用于遮挡视频字幕，帮助学习第二语言的用户提高听力技能。可通过点击圆球，产生一个可以移动的矩形用来遮挡字幕，还可以通过拖拽矩形的右下角↘来调整矩形大小。

Note: This tool can be used to conceal video subtitles, assisting users learning a second language in improving their listening skills. You can generate a movable rectangle by clicking on the circle to cover the subtitles. Additionally, you can adjust the size of the rectangle by dragging the bottom right corner ↘.

• English
• 中文

• Floating button that can be dragged around the screen
• Resizable rectangle that can be created by clicking the floating button
• Automatically adapts to fullscreen changes
• Can be used to cover subtitles to help users learning a second language improve their listening skills

• Bilibili (https://www.bilibili.com)

• Install the Tampermonkey browser extension (if not already installed).
• Click here to install the Tampermonkey script.

• Move your mouse to reveal the floating button
• Click the floating button to create a resizable rectangle
• Drag the rectangle or resize it using the bottom-right handle
• Click the floating button again to remove the rectangle
• Use the rectangle to cover subtitles to improve listening skills in a second language

• 可拖动的浮动按钮
• 点击浮动按钮可创建可调整大小的矩形
• 自动适应全屏状态变化
• 可用于遮挡视频字幕，帮助学习第二语言的用户提高听力技能

• 哔哩哔哩 (https://www.bilibili.com)

• 安装油猴浏览器插件（如果尚未安装）。
• 点击此处安装油猴脚本。

• 移动鼠标以显示浮动按钮
• 点击浮动按钮创建可调整大小的矩形
• 拖动矩形或使用右下角手柄调整大小
• 再次点击浮动按钮以移除矩形
• 使用矩形遮挡字幕以提高第二语言的听力技能