Gnotobiote
不受已知微小动植物污染或与之有关联的(实验)动物
🗣️ 情景例句
Thanks for everything, if you ever need a favor in return, just let me know.
感谢你所做的一切，如果你需要我帮忙的话，尽管开口吧。
A plant may produce new flowers; man is young but once.
花有重开日，人无再少年。
and comforted by the thought of the help he was bringing to his friend,
想到能对朋友有所帮助，他感到欣慰，