As a result of this transaction, one or both devices may experience a mode change, which may be signaled by a audible, visual or tactile confirmation to a user.

作为此事务的结果，设备之一或二者都可以经历模式改变，该模式改变可以通过听觉、视觉或触觉信号来向用户确认。

youdao

And, well, we can't express our disappointment enough here -- not only does a mode dial simplify the process of selecting your primary shooting preference, it also serves to provide confirmation of your current pick, letting you know that you're in manual before you fire off a half dozen now-useless frames.

ENGADGET: Canon EOS M review: was Canon's first mirrorless ILC worth the four-year wait?