Seccam
赛康姆型胶轮驱动运输系统
🗣️ 情景例句
She loves children.
她喜欢孩子。
You two don't have much contact
？ 你们俩没怎么联系吗？
Has it got anything to do with your present research?
报告跟你目前的研究有关吗？