Steinkern
[地质]石核, 石核模
🗣️ 情景例句
There is a lot of unsavory material available on the internet.
网络上有很多不健康的信息。
Gather ye rosebuds while ye may.
有花堪折直须折。
I'm not sure that this conference is as good as last year's.
我确信这次会议不如去年的会议精彩。