outer wall

基本解释

A man is silhouetted against the outer wall of a church in the colonial town of San Miguel de Allende in central Mexico.
中墨西哥殖民城市圣米格尔阿连德，一名男子的剪影映在一座教堂的外墙上。
Most antibiotics directly attack the microbes that make us ill. Penicillin, for example, weakens bugs’ tough outer wall to the point that many of them simply explode.
大多数的抗生素直接攻击使我们致病的细菌，比方说盘尼西林，能使细菌的坚韧的细胞外壁软化到一定程度，然后使它们中的大多数简单地胀爆死掉。
The original ring was a tree-lined boulevard that traced the path of the city’s ancient outer wall.
最初的环城公路是沿这座城市古老外墙的路径建成的林荫大道。

The text says they "cowered like dogs crouched against the outer wall.
书上写道“像狗一样,蜷缩在墙角。
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Many sections of the outer wall still stood, places where the brick had managed to stand up to the falling debris.
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You can bounce of certain parts of the outer wall (the yellow parts), but others (err, the red walls) will cause your instant death.
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