形容植物对象，绿油油的。就是很绿，又像含很多水分，欲滴=就要滴下来了。一般一棵单薄的小草不会被这样形容。

it means the plants are as green as watercolour painting which is not dry~

成语，就是很绿。

苍翠欲滴的意思是：形容草木等绿色植物仿佛饱含水份一样。意思是植物饱含水分的样子。

Literally means: the green color (of vegetation) is so fresh that it looks like that juice will drip out. It's an adjective usually used for green mountains. e.g. 雨后的泰山苍翠欲滴 Imagine you are standing in a mountain covered with trees. It is in the spring, after a light shower new shoots grow out. The green vegetation looks so fresh that you can squeeze juice out of them. (or with some exaggeration, the juice will drip out by even without squeeze)