1.keytosymbol  2.legend  3.keytolegend  

圖的英語翻譯：

chart; drawing; fig.; map; plot; picture; intention; attempt; plan
【計(jì)】 diagram; graphtyper
【化】 diagram
【醫(yī)】 chart; column diagram; diagram; graph; map; picture; schema; scheme
sheet

例的英語翻譯：

case; exemple; precedent; routine
【機(jī)】 example; instance

說明的英語翻譯：

explain; narrate; account for; illustrate; make out; say; show; specify; state
directions; explanation
【計(jì)】 DCL; declaration; elucidata; explanatory notes
【化】 specification; specify
【經(jīng)】 explanation; explanatory note; justification