Where does this definition of be careful in come from?
This entry for be careful in is sourced from GetWord Corpus, one of the dictionaries and corpora merged into Lughet.
Is be careful in a noun, verb, or something else?
In this entry, be careful in is tagged as 2v..
What is Lughet?
Lughet is a free trilingual dictionary covering nearly five million entries across Uyghur, Chinese, and English, drawn from more than ten source dictionaries and corpora.