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to be surprised; to be taken aback; to be amazed; to be astonished; to be shocked
to be frightened; to be startled; to be alarmed
その知らせに驚きました。
I was surprised by that news.
大きな音に驚いてしまった。
I was startled by a loud noise.
テストの成績がよくて彼に驚いている。
I'm amazed at his grades.