1. Artifically-made cannont replace natural one.
2. Helping, on the other hand, can be destructive.
3. It is an international issue to protect birds.
4. Try not to destroy everything.
1. 人工不能取替天然.
1. The man-power cannot take naturally for.
2. 幫助另一方面是破壞
2. On the other hand the help destroys.
3. 保護候鳥是國際性
3. The protection migratory bird is an international characteristic.