She tied a pretty knot at the end of her pigtails.

她在辫子的末梢打了一个花结。

《新英汉大辞典》

Lift the "X" part of the knot and slip the running end under this "X" horizontally.

将绳结的“X”形状部分提起来，并把绳索的活动末端塞入“X ”形的水平下方。

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Pick up the running end of the rope (the end that will be loose after you tie the knot).

拿起绳索的活动末端（在完成绳结后，末端将变得松散）。

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