breastworkn.
英 'bres(t)wɜːk | 美 'brɛst,wɝk
中文n. 赶工做成的防壁；矮防护墙，临时胸墙
词根词源
breastwork (n.)"fieldwork thrown up breast-high for defense," 1640s, from breast (n.) + work (n.) in "fortification" sense. Old English had breostweall in same sense.
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