屏幕虚拟键盘使得语言即时转换功能得以实现，这个虚拟键盘有按键可以反映你选择的语言。
That feature is made possible by the on-screen keyboard, with keys that change to reflect the language you've selected.
$TERM 反映了您的终端（可能是终端模拟程序）设置，对于确保正确地呈现文本、颜色以及对按键进行正确的解释，这是非常重要的信息。
TERM reflects your terminal (probably terminal emulator) settings -- important for ensuring proper rendering of text, colors, as well as proper interpretation of keystrokes.
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