One way to hold remotely is as a gap you are reaching across. Something sits far off, and you touch it from where you are, without closing the distance. Sometimes the gap is real space: you are on a boat and the robot is on the sea floor. Sometimes the gap is likeness: the drink is a long way from tasting like lemon, and it only just reaches it. Either way the word keeps the distance in view, so whatever it touches, it touches only from far off.
From the word’s history
The packet's source entry gives remotely as remote plus -ly, so the word is simply the adjective remote turned into an adverb: in a far-off way.
來源資料只說 remotely 是 remote（遙遠的）加上 -ly。所以它字面上就是「用很遠的方式」。距離的畫面本來就在這個字裡面，後來才被拿去講程度。
Wiktionary entry for remotely (kaikki:3f6f69a190036ae4:1251851867:7260), etymology_text: "From remote + -ly."
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