It must be out of the range of shadow from buildings or foliage as, self evidently, a shadow falling across the sphere would negate the results.

它必须是出于从建筑物或树叶的阴影范围内，自显然，一个影子在球会否定的结果下降。

youdao

It must be out of the range of shadow from buildings or foliage as, self evidently, a shadow falling across the sphere would negate the results.

它必须是出于从建筑物或树叶的阴影范围内，自显然，一个影子在球会否定的结果下降。

youdao