Sssis
(sssi 的复数) abbr. sites of special scientific importance 特别重要的科学场所
🗣️ 情景例句
You'll be glad to hear that Bill is alive and kicking.
比尔现在精神饱满，你听了一定很高兴。
Catch the bear before you sell his skin.
大事未成时，莫开庆功宴。
Do you know what they are?
你知道他们是干什么的吗？