I had the idea when I was 12 from watching a program about kangaroos and the way they store energy in their Achilles tendons.

他说：“我十二岁的时候在看一个关于袋鼠的电视节目，于是便有了这个想法。”

youdao

On average about 3m kangaroos are killed legally for commercial purposes each year in Australia. Most of them are killed in the wild bushes.

澳大利亚平均每年有大约300万只袋鼠因商业目的而被合法猎杀，大多数被射杀在野外的灌木丛中。

youdao

The mice hopped about like kangaroos, using both their forelimbs and hind limbs.

BBC: Discovery prompts spinal cord hope