名詞 clef:

1. a musical notation written on a staff indicating the pitch of the notes following it

clef

n.Music （名詞）【音樂(lè)】
A symbol indicating the pitch represented by one line of a staff, in relation to which the other pitches of the staff can be determined.
譜號(hào)：一個(gè)標(biāo)明五線譜一行所代表的音高，由此五線譜的其它音高標(biāo)準(zhǔn)可以確定

來(lái)源：
French [key]
法語(yǔ) [鍵]
from Old French
源自 古法語(yǔ)
from Latin cl3vis
源自 拉丁語(yǔ) cl3vis