To make things worse, I managed to fall right in front of four girls from the ninth grade.

更糟糕的是，我正好摔倒在四个九年级女生的面前。

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For such short exposures, the rear curtain starts to fall, covering up the sensor before the front curtain is even fully open.

在这样短的曝光下，后幕帘落下，在前幕帘完全打开前遮蔽感光元件。

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The rear brake is your friend, because too much front brake can cause you to fall.

后刹车是你的朋友，因为当你使用后刹车太多可能导致摔倒。

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American Nick Symmonds won his 800-m semifinal heat, despite having three runners in front of him trip and fall down.

VOA: standard.2009.08.22

The Magpies' shaky defence was tested as early as the first minute when Titus Bramble was too casual and allowed a ball to fall in front of Allan Russell.

BBC: SPORT | Football | FA Cup | Newcastle 1-0 Mansfield

"It's a mixture of things from overcrowding at the bus stop to children who may fall out in front of a vehicle, " she said.

BBC: Death prompts transport safety calls

Last fall, Artemis said the front beam of the catamaran was damaged during structural tests, delaying the boat's christening.

NPR: America's Cup Expected To Go On After Fatal Wreck