cautiousadj.谨慎的;十分小心的
cautious running警告运转
Cautious divorce慎重离婚
cautious optimism谨慎的乐观
Cautious-waiting谨慎等待
"she ventured cautiously downstairs"
"they handled the incident with kid gloves"
"we estimated the number of demonstrators conservatively at 200,000."