其實我哋都有光控制嘅閂掣 而且我哋可以好容易想像到 通過安裝呢種光控制嘅閂掣 我哋可以隨時隨地閂咗一個記憶
In fact, we all have light-controlled off buttons, and we can easily imagine that by installing this light-controlled off button, we can turn off a memory anytime and anywhere