This is the result of the four polar bonds clustering symmetrically in space.
这是四个极性键按空间对称聚集的结果。
Symmetric disposition of polar bonds still results in a nonpolar molecule.
空间对称的极性键分布，还是会导致整个分子为非极性分子。
It is an aggregate of four polar bonds, but they are symmetry arranged in space.
这是四个极性键，按空间对称聚集的结果。
The second way to have something that is net nonpolar is to have spatially symmetric disposition of polar bonds.
第二种构成，需要空间非极性，就是需要极性键的空间对称分布。
The second way to have something that is net nonpolar is to have spatially symmetric disposition of polar bonds.
第二种构成，需要空间非极性，就是需要极性键的空间对称分布。
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