深思用英文怎么说r开头

深思用英语可以表示为 "deep thinking" 或者 "profound contemplation". 这个词源自拉丁文 "profundus"，意思是 "深的，深刻的"。

下面是一些例句：

After much deep thinking, he finally came to a conclusion. (经过深思熟虑之后，他最终得出了结论。)
She spent hours in profound contemplation, trying to understand the nature of reapty. (她花了几个小时进行深思，试图理解现实的本质。)