It is therefore important to seek medical advice to determine which type of colour vision deficiency is present.

因此，这是重要的先请教医生，以确定哪些类型的颜色视觉的缺陷是目前。

youdao

First signs of potassium deficiency are a reduction in growth rates. Plants become stunted and usually leaf colour is darker.

缺钾初期阶段的表现是，作物生长速度减慢，植株矮化，叶色通常发暗。

youdao