be like a deer caught in the headlights
US /bi laɪk ə dɪr kɔt ɪn ðə ˈhɛdˌlaɪts/
UK /bi laɪk ə dɪr kɔt ɪn ðə ˈhɛdˌlaɪts/

1.
像一只被车灯照住的鹿, 惊呆了,不知所措
to be so surprised or frightened that you cannot move or think
:
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When the teacher asked him a question, he just stood there like a deer caught in the headlights.
当老师问他问题时,他只是站在那里,像一只被车灯照住的鹿。
•
She was so shocked by the news that she just froze, like a deer caught in the headlights.
她被这个消息震惊得僵住了,像一只被车灯照住的鹿。