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1·There were signs, indications, undecipherable, what does in matter.

有一些迹象和信号存在，即使它们暂且无法解读。

2·All you remember about your child being sixteen is loud music and undecipherable lyrics screamed to a rhythmic beat.

孩子16岁时，你所记得的，是吵闹的音乐和以富有节奏的拍子尖声唱出的难以听懂的歌词。

3·The earlier melancholy made the work undecipherable, but recent works are conveying a sense of calming harmony where thoughts have condensed.

早期的忧郁使得作品抑郁、难以捉摸，近期的忧郁则使作品显得更为冷静和谐，多了一份沉寂的思索。