词汇	圍塹
释义	圍塹 wéi qiàn围绕城垒的壕沟。围堑
随便看	two-way-shot two-way signal two way signaling two-way signaling two-way silicon control two way simplex two-way simplex two-way simplex circuit two-way simplex ciruit two way simplex connection two way simplex operation two-way simplex operation two-way simultaneous two way simultaneous communication two-way simultaneous communication twoway simultaneous interaction two way simultaneous interaction two-way simultaneous interaction two-way-simultaneous interaction two-way simultaneous link two way simultaneous operation two-way simultaneous operation two-way sincerity two way slab two-way slab