Gera
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
He went to Canada on business.
他因公赴加拿大。
What number are you calling?
你打什么号码？
They're in red and white.
他们穿着红白相间的衣服。