descending from an ancestor to a legal heir; passing down by inheritance.
承袭的祖先传给合法继承人的；由继承传下来的
My sister's family is descending on us this weekend.
想不到我姐姐一家本周末要到我们这里来
An electromagnetic wave of audio frequency produced by atmospheric disturbances such as lightning, having a characteristically decreasing frequency responsible for a whistling sound of descending pitch in detection equipment.
啸声干扰一种由于诸如闪电等大气干扰而产生的音频电磁波，具有典型的逐渐减弱频率的特征，该频减引起了检波设备中调逐渐下降的啸声
