But artificial trans fats also called trans fatty acids are created when vegetable oil hardens during hydrogenation.

但是人造的反式脂肪也被称为反式脂肪酸，是在氢化过程中植物油变硬时产生的。

Artificial trans fat, also called trans fatty acids, is created through an industrial process that adds hydrogen to vegetable oils.

人造反式脂肪，也被称为反式脂肪酸，是通过在植物油中添加氢的工业过程制造出来的。