健壮 (jiàn zhuàng): แข็งแรง

This child has kept swimming since early childhood; his body is very robust and he almost never gets sick.

Grandpa is eighty, but his back is straight and his steps are steady; he still looks very robust.

After three years of scientific training, the horse's limbs became very robust, and it finally won the race.

This plant still grows robustly in harsh environments because its root system is especially developed.