astonished

I was astonished to find that my old childhood friend was now a famous actor.

(Chinese) 我惊讶地发现我童年的老朋友现在竟然成了一名著名演员。

They were astonished by the sheer size and beauty of the Grand Canyon.

(Chinese) 大峡谷的巨大规模和壮丽美景让他们惊叹不已。