参考

1. ^https://www.amazon /Cat-Paws-PIE-International/dp/4756250815

2. ^https://www.science.org/doi/abs/10.1126/science.1220893

3. ^http://www.kepu.net.cn/ydrhcz/ydrhcz_zpzs/ydrh_2019/201905/t20190517_479289.html