盖尔镇定地注视着哈里，沉默了片刻。Gail was silent for a moment, regarding Harry with his steady gaze.她镇定而且坚强，绝不会垮掉。She's calm and strong, and she is just not going to crack.杀人后，他镇定地点起火销毁罪证。After the killing, he calmly lit a fire to ...
活塞上涂了一层石墨以减小摩擦力。The pistons are graphite-coated to reduce friction.咱们用车床车[加工]新的活塞吧.Let's get the lathe to turn the new piston.他们改用活塞发动机.They use a piston engine instead....
他认为婴儿几乎就是毫无生命的物体。He thought of the baby almost as an inanimate object.标准尺寸的三脚架可能会不便于使用，用于拍摄低角度的物体时尤其如此。Full-size tripods can be awkward, especially if you'reshooting a low-level subject.任何有较强重力的物体都会对其他物体产生引力。Anythin...