like: cát tuyến
Intermediate Level Advanced Level
Composite Words Listening Comprehension Oxford Topics Duolingo Topics 315 Activities
BEGINNER LEVEL
exact:
VNEN 
cát tuyến * ☊ 
secant * ☊
[ cát ] : (1) sand; (2) lucky, happy
[ tuyến ] : (1) line, lane; (2) gland
[ cát ] : sand