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1·Slot your foot (big toe up, pinky toe down) into the crack up to the arch of your foot, keeping your knee out to the side.

把你的脚尖（大脚趾在上，小指在下）楔入裂缝中去，直到你的足弓的部分，膝盖保持向外。

2·He said the security forces would continue to crack down hard on the protestors.

他说安全部队将继续严厉镇压抗议者。《柯林斯英汉双解大词典》

3·Every minute or so I could hear a snap, a crack and a crash as another tree went down.

几乎每隔一分钟，我就会听见又有一棵树倒下时发出的折断声、噼啪声和塌倒声。《柯林斯英汉双解大词典》

4·Officers will crack down on lunatic motorists who speed or drive too close to the car in front.

警官们将严惩那些超速行驶或与前面车辆追尾的疯狂驾车者。《柯林斯英汉双解大词典》

5·The House voted today to crack down on banks that launder drug money.

下议院今天投票打击为贩毒洗钱的银行。《柯林斯英汉双解大词典》

6·They had pushed the agency to designate the bird as endangered, a status that gives federal officials greater regulatory power to crack down on threats.

他们敦促该机构将这种鸟列为“濒危”，这个地位可以赋予联邦官员更大的监管权力来打击对鸟的威胁。

7·It appears that the shell has to crack open or break down somewhat to allow the seed to soak up water.

看来，为了让种子吸收水分，种子的外壳必须裂开或破裂。

8·They had pushed the agency to designate the bird as endangered, a status that gives federal officials greater regulatory power to crack down on threats.

他们敦促该机构将这种鸟列为“濒危物种”，这个地位可以赋予联邦官员更大的监管权力来消除对该物种的威胁。

9·PARIS - the British Parliament on Thursday approved plans to crack down on digital media piracy by authorizing the suspension of repeat offenders' Internet connections.

巴黎——英国议会周四批准了一项计划，决定对数字媒体盗版进行打击，方法就是授权中断累犯们的网络连接。

10·Shandong sports authorities said the move aims to crack down on marathon cheating as some athletes had taken a short cut or even hired impostors to run for them.

相关官员表示，日前在马拉松比赛中出现了部分参赛者抄近道或冒名顶替参加比赛等作弊行为，此举是为严厉打击这种现象。