向后

He grabs hold of the cell door, rears his head back and bashes it into the metal bars.

他抓紧了牢门，向后仰头然后用力撞向金属栅栏条。

First, notice that the athlete exhales fully while his face is under water.

其次，当他的手向前伸直并向下沉时，他就开始了拉水动作，然后在身下向后拉水，一直拉倒大拇指接近大腿为止。

Safety Belt Tension Furling Device: While a collision happens, if the driver uses a safety belt without tension furling device, the injury may happens by the collision on the instrument board or the steering wheel etc.; Safety belt tension device uses the gas generator in the safety belt tension furling device touched by the speed acceleration of collision, the gas expansibility generated will make the tension device rotate in the reverse direction, bringing the passengers back on the seats, protecting the passenger's security.

对于安全带预张紧卷收器：在发生碰撞事故时，若使用非张紧普通安全带，仍然有可能触及汽车方向盘和仪表板等部位而使乘员受伤；预紧式安全带利用撞车时的加速度触发安全带卷收器中的气体发生器，产生的气体膨胀力使卷收器反向旋转而收紧织带，将乘客向后拉向座椅，从而更可靠地保护乘客的人身安全

Safety Belt Tension Furling Device: While a collision happens, if the driver uses a safety belt without tension furling device, the injury may happens by the collision on the instrument board or the steering wheel etc.; Safety belt tension device uses the gas generator in the safety belt tension furlingdevice touched by the speed acceleration of collision, the gas expansibility generated will make the tension device rotate in the reverse direction, bringing the passengers back on the seats, protecting the passenger's security.

对于安全带预张紧卷收器：在发生碰撞事故时，若使用非张紧普通安全带，仍然有可能触及汽车方向盘和仪表板等部位而使乘员受伤；预紧式安全带利用撞车时的加速度触发安全带卷收器中的气体发生器，产生的气体膨胀力使卷收器反向旋转而收紧织带，将乘客向后拉向座椅，从而更可靠地保护乘客的人身安全

It drove you to bend back with all your might until your groins hardened, your thighbones pushed up and out, and your lower back arched too deeply.

你尽可能地向后弯曲，直到腹股沟变硬，大腿骨向上、向外推出，下背部过度地深弯。

The stroke is made up of the catch, in which oars are placed in the water; pull through or drive, in which the legs are extend and the body opens up to make maximum use of the slide, levering the boat farwards; the finish, in which oars come out of the water;and the recovery , in which the rower's body moves towards the stern in preparation for the next stroke.

划桨 划桨是指将桨放入水中；拉桨，运动员腿伸直，整个身体都向后滑行展开，从而使船向前，然后桨离开水面；然后运动员归为原位，也即运动员向船尾滑行为下次划桨做好准备。

The stroke is made up of the catch, in which oars are placed in the water; pull through or drive, in which the legs are extend and the body opens up to make maximum use of the slide, levering the boat farwards; the finish, in which oars come out of the water;and the recovery , in which the rower's body moves towards the stern in preparation for the next stroke.

划桨 划桨是指将桨放入水中；拉桨，运动员腿伸直，整个身体都向后滑行展开，从而使船向前，然后桨离开水面；然后运动员归为原位，也即运动员向船尾滑行为下次划桨做好预备。

Recognition flashed there, but s/he lurched backwards with another scream, struggling in his grip.

承认在那里闪现，但是 s/他向后以另一声尖叫声突然向一边倾斜，在他的紧握中奋斗。

The lower tab at the base of the skull pulls the upper tab backwards and down towards the neck, which snugs up the hood and also affects the ride height of the semi-stiff brim.

脑壳底部有下拉片，作用是将上拉片向后和向下拉，以收紧风帽，使其紧贴头部，另外还会影响到半软硬帽沿的 ride height （估计是指帽沿的立起高度）。

His premonition had prepared him: when he saw the dog coming for him, Cai somersaulted backwards, but the dog was already on him!

蔡早有预感，所以他一看到狗向他扑来，马上向后一闪，可是狗已经咬到他了！

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。