Tie knots in the ribbons.

在丝带上打结。

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From bizarre antimatter to experiments that tie light up in knots, physics has revealed some spooky sides of our world.

从奇异的反物质到把光捆扎成结的实验，物理学已经揭示了我们世界的一些幽灵般的方面。

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Tie two knots in the cord outside the hole. Thread the other end of the cord through the second hole. Tie two knots in the cord.

把线穿过一个小孔，在小孔外面打两个结，把线的另一头穿过第二个小孔，也在线上打两个结。

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Mr Clegg is plunging into a briar patch, and may find the thorniest tangles in the Lords, where an impressive array of vastly experienced peers are poised to try and tie him in knots.

BBC: Nick Clegg's Lords reform battle

Faced with such obligations, firms tie themselves in knots to avoid hiring anyone at all.

ECONOMIST: Race in South Africa

Meanwhile, though, the Danes can have fun watching the Swedes tie themselves in knots before the referendum on euro membership in September.

ECONOMIST: Relations with the EU are warming a little