tōu​dù

to cross a border illegally

偷渡 tōu​dù
to cross a border illegally
to cross a border, checkpoint, or blockade secretly and without authorization; to travel as a stowaway
illegal border crossing
the act of illegal immigration, alien smuggling, or running a blockade

Frequency

Movie subtitles
2.30 per million appears in 1% of films
Written text
2.56 per million

Sources