Phonocardiogram
n. [医]心音图
🗣️ 情景例句
All right.
很正确。
One cannot always be a hero, but one can always be a man.
人难一世称雄，但可一生为人。
but each year, the dogs are still sent out into the snow whenever a traveller is in difficulty.
但每年还要派狗到雪山地里去帮助那些遇到困难的旅游者，