I cracked my head on the low door-frame.
我的头撞在低矮的门框上了。
And the cold light source lamp magnifying glass products neurosurgical head frame.
以及冷光源头灯放大镜颅脑手术头架系列产品。
Duck your head or you'll bang it on the door-frame.
把你的头低下来，要不你盆撞到门框的。
Advantage: frame can open, make replacing hammer head, back plate and lining board work easier.
优势：机架可以开启，使得更换锤头、反击板及衬板的工作更加简便易行。
Stop down or you'll bang your head on the door frame.
弯下身不然门框会碰你的头的。
Stop down or you'll bang your head on the door frame.
弯下身不然门框会碰你的头的。
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