periscopes
n.
潜望镜( periscope的名词复数 );
例句:
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Periscopes at various heights and apparatus of visual relationship between the departed and the living souls.
借助不同高度和方位的潜望镜,人们可以看到逝去与活着的灵魂之间的视觉关系.
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They can have courtyard gardens and submarine-like periscopes, and still be cost-effective.
来自WSJ
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These timid creatures are justifiably afraid to leave their burrows and scan for danger as if with periscopes.
来自BBC
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Here we spy seals bobbing like periscopes in the sea, followed later by a handful of puffins.
来自THETIMES