Geras
(gera 的复数) abbr. geratologic(al)(ly) 老年医学的（地）; geratologist 老年医学家; geratology 老年医学
🗣️ 情景例句
Happy Thanksgiving.
感恩节快乐。
Slowly, mountains are worn away by the wind.
山体逐渐被风化了。
One is the general atmosphere of secrecy in which it is carried out,
一是科研工作中普遍存在的保密气氛；