to make unrealistic plans or dreams
做不切实际的计划或梦想 (zuo buqie shiji de jihua huo mengxiang)
"He’s always building castles in the air instead of acting."
"他总是在做空想而不行动。" (ta zongshi zai zuo kongxiang er bu xingdong)
eating healthy food helps you stay well
to destroy relationships or connections permanently
to stay alert and watch carefully
to establish the mood or style for something
in a difficult or tricky situation
a hacker with malicious intent
