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entrenchment [ɪn'trenʧmənt] n
gen. 防〔保〕护
el. 挖沟
eng.geol. 刻槽; 下切; 深切; 挖壕
oil 防御设施
securit. 防御措施
tech. 修壕沟防护; 堑壕; 挖壕沟; 挖槽
entrenchment: 3 phrases in 3 subjects
Desert science1
Earth sciences1
Securities1