F-value
焦距值
🧩 词语组成解析
🗣️ 情景例句
Philip was a young doctor,
Philip当时是个年轻的大夫
They used to live there, didn't they?
他们过去住在哪里，不是吗？
good-tempered elephant who will give many years of loyal service.
脾气温顺、能忠实为人服务多年的大象。