And then lastly, one thing we're interested in doing is detecting the early onset of chlorosis -- and this is an orange tree -- which is essentially seen by yellowing of leaves.
最后， 我们感兴趣的另一件事 是检测早期的植被萎黄病—— 这是一棵橘子树—— 你们可以看到泛黄的树叶。