Vectorcardiographic
心电向量描记法的
🗣️ 情景例句
Safety first.
安全第一。
Why are you so excited?
你为什么这样兴奋？
and the trunk eventually becomes so sore that the elephant curls it up and seldom afterwards uses it for offensive purposes.
象鼻子最后疼得卷了起来，以后它就很少用鼻子去进攻了。