壁垒森严_酷词

adj.
[繁体]壁壘森嚴
[拼音]bì lěi sēn yán
[英文]
closely guarded, strongly fortified, sharply divided

bì lěi -sēn yán

壁垒森严bì lěi -sēn yán

比喻防守严密;也比喻界限划得很分明

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