Silaceous
含硅的
🗣️ 情景例句
on the community-center project.
为社区中心的事。
He is attending a conference now.
他正在出席会议。
they aroused great interest at the time, they had important theoretical consequences,
这些观察在当时引起了人们极大的兴趣，具有重要的理论意义，