当浅滩掉进水中深穴或在溢洪道和闸门之出水口，这种技巧特别有效。

This technique is particularly effective where a riffle drops into a pool or at the dis-charge of a spillway or penstock.

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当浅滩掉进水中深穴或在溢洪道和闸门之出水口，这种技巧特别有效。

This technique is particularly effective where a riffle drops into a pool or at the dis-charge of a spillway or penstock.

youdao