The main hoist winch and a system of elevators lift 1,250 tons of pipes and machinery through the 72 inches wide hole at the bottomof the boat.
主起吊绞车和升降机系统可通过船底72英尺宽的洞，提升1，250吨重的管道和机械。
2
One of the first water clocks was a basin with a small hole near the bottom through which the water dripped out.
最早的水钟之一是一个在底部附近有小洞的水盆，水从这个洞里滴出来。
3
In the image, one coronal hole appears near the top center of the sun while another one — a polar coronal hole — is visible near the bottomof the view.