迅速用英语怎么说

"迅速"用英语可以表示为"quickly"或"rapidly"。
关于这个词的来源，"quickly"和"rapidly"都有同根词，它们来源于拉丁语"qui"和"rapidus"，分别表示"快"和"急速"。
下面是一些用这个词的例句：
The fire spread quickly across the dry grass.
He quickly realized his mistake and apologized.
She ran quickly to catch the bus.
The car accelerated rapidly down the highway.