🗣️ 情景例句
the plans for the community center
这项修建社区中心的计划
What did he answer you?
他回答了你什么？
Instruments have been devised and can be so placed that all three elements can be recorded in different graphs.
已经设计出了一些仪器，它按照一定的安放方式就可测绘出这三种运动的曲线图。