Frcmc
纤维增强陶瓷基复合材料
🗣️ 情景例句
Are you ready for a lifetime commitment?
你准备以身相许了吗？
Try to be there by 8:15 the airport will be crowded.
尽量在8点15分以前赶到那里，到时机场会很拥挤的。
There are eighteen floors in the building, and he lives on the fifteenth floor.
这幢大楼有18层。他住在第15层。