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to phrases
swallow-hole
['swɔləuhəul]
soil.
石灰坑
swallow hole
desert.
石灰坑
;
灰岩坑
dril.
落水洞
el.
石灰岩渗水坑【地质】
eng.geol.
岩溶坑
;
陷落坑
oil
陷落洞
tech.
渗坑
swallow-hole
:
5 phrases
in 3 subjects
Engineering geology
2
Oil / petroleum
2
Technology
1
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