intrigante (a) (interessar) | fascinating (a) (interessar) |
intrigante (a) (problema) | complex (a) (problema) |
intrigante (a) (problema) | difficult (a) (problema) |
intrigante (a) (problema) | hard to understand (a) (problema) |
intrigante (a) (interessar) | intriguing (a) (interessar) |
intrigante (a) (problema) | intricate (a) (problema) |