Orthocentre
n. [数]垂心
✅ 同义词
🗣️ 情景例句
Why is he blowing his horn like that?
为什么他这样子按喇叭？
East or west, home is best.
在家千日好，出门时时难。
Then knowledge began to be accumulated according to a systematic plan.
于是，知识便开始有系统有计划地积累起来。