Erectus
a. 直立的
🗣️ 情景例句
He's always trying to pick up on me.
他总想调戏我。
Knowledge without practice makes but half an artist.
只有知识而无实践，只能造就半瓢水的艺术家。
Every solid object will reflect a sound, varying according to the size and nature of the object.
任何固体者反射声音，反射的声音因物体的大小和性质的不同而不同。