久違了, 同學小薇. (sorry, the font was too small to see in the earlier

Just a few suggestions, but I could be wrong.

1. No man-made precious gems and metals are - none of the man-made ...

2.  such as light, agility, flexibility, elegance - such as its lightness, agility ...

3. The green, red and yellow colored feathers shine as hummingbirds always live in the sky without touching the dust and grass. - this sentence should be broken into two sentences, because there is no causal relationship between the first and second part of the sentence. 

所有跟帖： 

• NewVoice 你提的這幾點都太對啦！謝謝！ -同學小薇- ♀ (0 bytes) () 07/18/2011 postreply 17:25:13