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Primary surface ripple below discernable amount in star test.
在星点测试之下主镜没有可办别的表面起皱。
youdao
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However the water was calm; not a ripple disturbed its surface.
这时湖上很平静，水面一点涟漪也没有。
youdao
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However the water was calm; not a ripple disturbed its surface.
这时湖上很平静，水面一点涟漪也没有。
youdao