n. 中心;(球队的) 中锋;中心区;中枢;
adj. 中央的,位于正中的;(在)中心的;
vt. 集中;使聚集在一点;定中心;居中;
vi. 居中,有中心,被置于中心;
🗣️ 情景例句
How do you do?
你好。
Have you taken a train?
你坐过火车吗?
Alternatively, if the star were small, the life-supporting planet would have to have a close orbit round it and also provide the perfect conditions for life forms to develop.