Sdos
(sdo 的复数) abbr. 服务数据对象（Service Data Objects）；合成干性油（synthetic drying oil）
🗣️ 情景例句
I didn't have that when Richard and Susan were born.
在Richard和Susan出生时我可没有人帮忙。
I am 60 years old and siingle.
我六十岁了，仍然单身。
You must look after it. Give it to Mr. Hu.
你一定要好好保管啊！让胡老师帮你拿着。