They kill bacteria by inhibiting enzymes the bugs use to build their protective cell walls.

细菌利用酶建立保护性细胞壁，而二者通过抑制酶来杀灭细菌。

As Peter thwipped a web and swung back toward the blue ghost, the sandy figure formed a protective wall around the wall-crawler.

彼得射出蛛网，又向蓝色鬼魂荡去时，沙人则在爬墙勇士周围形成了一道保护墙。

After this massacre, disheartened Crusaders fled from their  castles to hide behind the protective walls of Jerusalem.

在这场大屠杀之后，心灰意冷的十字军逃离了他们的城堡，躲在耶路撒冷的防护墙后面。

Its protective wall, carved right out of the hillside, was seven miles long, fortifying what was a huge city.

它的防护墙直接从山坡上开凿出来，长七英里， 坚固了这座巨大的城市。

To develop effective evacuation plans and test protective walls, the Disaster Prevention Centre at Kyoto University simulates the effects of a Nankai trough earthquake in a pool.

为了制定有效的疏散计划并测试防护墙承受力，京都大学的灾害预防中心在水池中模拟了南开海槽地震的影响。