基本解釋半周長同根派生 semi-perimeter相關(guān)詞英漢例句Guards patrolled the perimeter of the airfield. 衛(wèi)兵沿機場四周巡邏。semi perimetern. 半周長The perimeter of the airfield is protected by guard-dogs. 機場外的環(huán)形防衛(wèi)圈由警犬保衛(wèi)著。The barbed wire fence round the perimeter discouraged intruders. 周圍有鐵絲網(wǎng)阻止了外人闖入。Guards had been posted at several points around the perimeter. 在環(huán)形防線上已布置了幾處崗哨。semi-perimeter更多例句