Esf
abbr. 欧洲社会基金（European Social Fund）；欧洲科学基金会（European Science Foundation）；电爆炸成形（Electro Spark Forming）
🗣️ 情景例句
and writing the background for Family Album,U.S.A.--
为Family Album,U.S.A.撰写背景说明的年轻人
The moon emerged from behind a cloud.
月亮从云后出现。
The most economical age to capture an elephant for training is between fifteen and twenty years,
捕捉15至20岁之间年龄的大象进行驯练最为经济。