B2 Someone who is cautious avoids risks.谨慎的,细心的,小心翼翼的
B2 A cautious action is careful, well considered, and sometimes slow or uncertain.经过仔细考虑的,斟酌过的
a feeling that there are some reasons to hope for a good result, even if you do not expect complete success or improvement审慎的乐观态度
More examples
The prime minister was extremely cautious, saying nothing inflammatory and giving no hostages to fortune.
Judging from your exam results, I think you have cause for cautious optimism about getting a university place.
Their supporters gave the decision a cautious welcome.
He is too cautious to be a great leader.
I think you should be cautious about trying to change their views.
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