Tetractinomorpha
四放海绵亚纲
🗣️ 情景例句
I'll go upstairs and stay with him until he falls asleep again.
我上楼去陪他， 直到他又睡着。
He has spent over six years working in Africa and India.
在非洲和印度工作了六年。
Did he telephone again last night?
他昨夜里又打电话了吗？