然而没有人帮她，也没有人看到她悄悄把落在五音不全的黄色琴键上的眼泪抹掉。
Nobody did, however, and nobody saw Beth wipe the tears off the yellow keys, that wouldn't keep in tune, when she was all alone.
三和弦是由三个音组成，包含从最低音上数第三音和第五音的。
Triads are patterns of three notes consisting of a note with a third and a fifth added, counting upwards from the lowest note.
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