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Fresnel stepped lens 菲涅尔阶梯透镜,菲涅尔分步透镜
You almost stepped on my contact lens. 你险些踩到我的隐形眼镜。
This lens can magnify 20 diameter. 这个透镜能放大20倍。
He stepped up so as to be able to speak. 为看得更清楚，他上到高处。
Analyois of Fresnel lens transmissivity and research of design[J]. 引用该论文陈杰;李湘宁;叶宏伟.
My boss was too old to work well. He stepped down. 我的老板年龄太大，做不好工作了，他上星期离了职。
The man stepped in and asked for my father. 那个人走进来求见我父亲。
Some adjustment of the lens may be necessary. 可能有必要调节一下镜头。
She stepped aside to let them pass. 她站到一边让他们走过去。
Do you have soft contact lens care product? 有没有软性隐型眼镜保养用品？
The ice cracked as I stepped onto it. 我一踩冰就裂了。
He uses lens to make things appear clearer. 他用镜片以便看东西更清楚些。
He bounced into the room with a springy step. 他以轻快的跑步跳进房间。
The lens is often used to make telescopes. 镜片常被用来做成望远镜。
He stepped on to the sidewalk from the bus. 他从公共汽车走下到人行道上。
Don't smear the lens; I've just polished it. 别把镜头弄脏了，我刚刚擦过。
They stepped out of the sun into the coolness. 他们到阴凉处躲避烈日。
They stepped over his prone body. 他们从他俯卧的身体上踩过去。
He stepped aside to let me pass. 他站到一边让我过去。
The camera lens must be screened from direct sunlight. 照相机的镜头不可受到阳光的直射。