2️⃣ 生成偶数Generate Even Numbers
生成一段偶数：可设个数、起点与步长（默认 2）。本地处理。可设置「个数」、「起点」、「步长」。Generate even numbers: set how many, the start value, and step (default 2). Processed locally. Settings: How many, Start, Step.
使用说明与常见问题How-to & FAQ
「生成偶数」是什么？What is the Generate Even Numbers tool?
生成一段偶数：可设个数、起点与步长（默认 2）。本地处理。可设置「个数」、「起点」、「步长」。Generate even numbers: set how many, the start value, and step (default 2). Processed locally. Settings: How many, Start, Step.
如何使用「生成偶数」？How do I use the Generate Even Numbers tool?
在「生成偶数」中，按需设置「个数」、「起点」、「步长」，结果会实时显示在下方，点击「复制结果」即可复制。In the Generate Even Numbers: Adjust "How many", "Start", "Step"; the result appears below instantly — click "Copy result" to copy it.
起点是奇数会怎样？What if Start is odd?
自动调到比它大的下一个偶数（例如 1 → 2，−3 → −2），再按步长递增，并在结果下方注明。It moves up to the next even number (for example 1 → 2 and −3 → −2), then steps from there, with a note below the result.
数值范围是多少？What are the limits?
「个数」1–20000；「起点」绝对值最多 10^15；「步长」须为非 0 的偶数，绝对值最多 10^9。在这个范围内每个结果都是精确整数；超出时会提示「太大」。How many: 1–20,000; Start: absolute value up to 10^15; Step: a non-zero even number with absolute value up to 10^9. Within these limits every result is an exact integer; larger values give a "too large" message.
输入和输出是什么样的？What does the input and output look like?
例如在「生成偶数」中把「个数」设为 4，「起点」设为 2，输出为：2 ⏎ 4 ⏎ 6 ⏎ 8（⏎ 表示换行）。For example, in the Generate Even Numbers with "How many" set to 4, "Start" set to 2, the output is: 2 ⏎ 4 ⏎ 6 ⏎ 8 (⏎ marks a line break).
有哪些选项可以调整？What options can I adjust?
「生成偶数」的设置：「个数」默认 20；「起点」默认 2；「步长」默认 2。每次生成结果都按当前设置处理。Settings in the Generate Even Numbers — "How many" default 20; "Start" default 2; "Step" default 2. The result always uses the current settings.
「生成偶数」免费吗？需要注册吗？Is the Generate Even Numbers free? Do I need an account?
「生成偶数」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Generate Even Numbers is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.