我学会了如何称出袋装种子的重量。I learned how to weigh out packages of seed.正如我们所说，科学家正在试验努力寻找让种子的生命力更加延长的方法。Scientists are experimenting to find ways to ensure the viability of seeds for even longer periods of time.乙醛酸循环体发现于油脂种子的贮藏组织中....
另一种可能性是亲鸟会偏爱强壮的雏鸟。Another possibility is that parents favour chicks that are strong.那只蛋的壳厚0.14毫米，新孵出的雏鸟重9克。The egg had a shell thickness of 0.14mm and the newly-hatched chick weighed nine grams.雏鸟出壳后不久就不见了。The young disa...