Oapec
阿拉伯石油输出国组织
🗣️ 情景例句
Oh ... Harry!
噢……Harry！
I feel guilty because I haven't written her lately.
因为我最近没给她写信，我感觉到有罪。
with their fellow scientists either in other countries or in universities,
和其他国家、其他大学同行们