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音阶上升三度容易，上升七度就难了。
It's easy to go up to a third scale, but difficult to a seventh.
youdao
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在七度下西洋的某次旅程中。
On one of the seven voyages.
youdao
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气温一夜间下降了七度。
The temperature fell seven degrees in a single night.
youdao
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气温一夜间下降了七度。
The temperature fell five degrees last night.
youdao
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气温一夜间下降了七度。
The temperature fell five degrees last night.
youdao