1.
A small cave or cavern.
洞穴小的山洞或洞穴
2.
Then the man got out of it quickly but the bull stopped,
然后洞里的人跑出洞来。
3.
holed by forklift hands
被铲车碰成洞铲车齿洞
4.
A little leak will sink a great ship; A stitch in time saves nine
小洞不补,大洞吃苦
5.
By timely mending saves much spending.
小洞不补，大洞难堵。
6.
full scale wind tunnel
整车风洞或全尺寸风洞
7.
An animal's hollowed-out habitation, such as a burrow.
洞穴动物中空的洞穴，如地洞
8.
The first or second9 holes of an18-hole golf course.
一种18洞的高尔夫球场的前九洞或后九洞
9.
A cave or hollow used as a refuge or hiding place.
洞穴一个用于避难或藏身的洞穴或空洞
10.
Ecological Study on Animals in Dayan Cave and No.2. Yantou Cave of Guangxi Province;
广西大岩洞、岩头2号洞洞穴动物的生态学研究
11.
tree cavity fillers
树洞填塞物(林业)
12.
mesio-incisio-distal cavity
近中－切－远中窝洞
13.
World University Insights
《世界大学洞察力》
14.
underground passages, caves, etc
地下通道、 洞穴等
15.
An artificial structure or excavation made to resemble a cave or cavern.
人工挖开的洞室类似山洞或洞穴的人工建筑或人工洞室
16.
clear water, mystic crags and grotesque caves.
秀水、美石和奇洞。
17.
Statistical Entropy of Schwarzschild Black Hole.;
Schwarzschild黑洞的统计熵
18.
Ecological Study on Animals in Hebian Cave of Qingren Valley and Yantan Cave of Guizhou Province
贵州情人谷河边洞和岩炭洞洞内洞穴动物的生态学研究