In tests, this fabric flap proved itself to be exceptionally good at sweeping up dust bunnies.

好吧。 在测试里这些多余的布料证明了自己清扫灰尘的功能非常出色。

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It opens in the jungle of Brazil at sunrise, when the birds wake up and * flap their colorful wings to the samba.

故事从日出时分的巴西丛林中展开，鸟儿醒来，拍动彩色翅膀，跳起桑巴舞。

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Other parts include a flap which appears to be a giant SIM card cover, but actually opens up to let you look at the circuitry inside.

其他改装包括一个看似像SIM卡盖，但实际上是可以打开以查看内部电路的翻盖。

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This time a single rook was presented with the same tray-string set-up, while its pair waited in a neighbouring cage linked by a one-way flap.

BBC: Rooks team up to solve problems