洞口用英语怎么说？

洞口

• [dòng kǒu]
  entrance to a cave

例句

• The cave led back into the rockface and the earth by the entrance was dry. 这个洞穴通向岩面,洞口处是干土.
• The hole is 20 metres across and plunges nearly 30 metres deep. 该洞口的直径为20米,并陷入将近30米深的地方.
• A mouse ran out from the dark orifice of the cave. 一只老鼠从黑暗的洞口跑出.
• Wedge the plug into the hole... 将塞子塞进洞口。
• Wedge the plug into the hole. 将塞子塞进洞口。
• The water rushed through the holes with great rapidity. 湍急的水流奔涌过洞口。
• The hornets are the worst -- they often lurk outside the hives to rob the bees. " 你得提防虫子爬进来,还得提防大黄蜂.大黄蜂这贼最恶, 常常落在蜜蜂窝洞口. 专干坏事. ”
• Most of the mouth of the cave was submerged in the lake. 洞口大半都淹没在湖里。
• The duo cut rectangular holes in balsa wood and covered them with glass microscope slides. 两人在轻质木材上剜出一些长方形的洞,然后在洞口盖上显微镜玻片.

行业词典

• 铁道： tunnel adit；又称 :洞口(tunnel opening)；