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to phrases
bolthole
['bəulthəul]
n
gen.
墙上的
透光孔
;
换气孔
;
观察孔
;
射击孔
;
采矿
联络小
风
巷
;
螺
栓
孔
;
漏洞
;
空子
archit.
锚杆孔
;
螺栓孔
;
石门
;
采矿
联络小巷
bolthole
:
6 phrases
in 2 subjects
Architecture
3
Technology
3
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