I flap the flies away but soon they fly back.

我把苍蝇赶走，但一会儿又飞回来了。

youdao

The flap is formed in the end wall over the hole and is movable away from the second end when an elongate device is introduced through the passage and the hole.

挡板形成在所述端壁中、在所述通孔上方，当细长装置引入穿过通道和通孔时，挡板可运动离开所述第二端。

youdao

Avoid laser pointers (that red dot moving all over the place will give you away) and while it's okay to speak from notes, don't use loose paper, which "will flap like a sail."

千万不要拿激光教鞭（那个红点四处乱窜，会让你的紧张显露无疑）。在演讲时参考笔记是可行的，但不要使用松软的纸张，因为它们会“像船帆一样来回摆动。”

youdao

But their most important job is to whistle,shout,flap their arms and run about crazily to turn the attention of an unhappy, with sharp horns away from a fallen rider.

VOA: standard.2010.01.25

Moments later, Goodwillie flashed in another tricky ball from the edge of the six-yard box that Smith managed to flap away.

BBC: David Goodwillie

And Romney will let congressional Republicans know that the payroll tax flap needs to go away for the duration of his campaign.

FORBES: Congress Is Back, And So Are Its Battles Over Tax And Budget Policy

She had to stop to tear her gloves off inside out, flap her T-shirt, lift her hair away from her blazing neck.

NEWYORKER: Friendly Fire