谷底

gǔdǐ

Bottom: originally referred to the bottom of a valley or river. New meaning: the bottom in the course of the development of something.

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【经】 bottom

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gu3 di3

valley floor, (fig.) lowest ebb, all-time low

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谷底

gǔ dǐ

valley bottom; valley floor

谷底滩地 strath;

谷底肿胀 bulging in valley （冻土区）

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谷底|谷底 [gǔ dǐ] ► valley floor ► (fig.) lowest ebb ► all-time low