気がつく， 気が付く， きがつく
1. to notice, to realize, to realise, to become aware (of), to perceive, to sense, to suspect
2. to be attentive, to be scrupulous, to be observant
3. to regain consciousness, to come to (one's senses), to come round
注意到，意识到，感知到，察觉到，怀疑；要细心，要谨慎，要留心；恢复意识，清醒过来，苏醒