The first grate has double spherical nets with the same center and outside the second one there is a shield cylinder to make electron congregate.

它采用四极枪结构，两个栅极，第一栅极采用双层同心球面网，第二栅极外还添加了屏蔽筒。

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The second problem is that Venus exhibits a halo of light when it is seen just outside the Sun's disc.

第二个问题是，当金星在太阳圆盘外被观测到时，它会呈现出光晕。

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In the middle of the night, Johnson rose unconscious from his hotel bed and climbed onto a ledge outside the second-floor window.

NEWYORKER: Betrayed

"He initially put one leg outside the crane, then he put the second leg outside the crane, " Lawrence said.

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Despite a weight disadvantage, he hiped Whitfield for the first fall, went down to an outside hipe for the second and then won the third and deciding fall by going to buttock but changing direction suddenly with a cross-click which left Whitfield without a leg to stand on.

BBC: Cumberland wrestling round-up