Sphenic
a. 楔形的, V形的
🗣️ 情景例句
Can you give me a hand with my homework?
你能帮忙教我做家庭作业吗？
Knowledge advances by steps and not by leaps.
知识只能循序渐进，不能跃进。
It seemed as if there was no way out.
看情形似乎没有出路了。