| |||
| bidirectional; both-way; two-way | |||
|
a due vie : 24 phrases in 12 subjects |
| Agriculture | 1 |
| Chemistry | 3 |
| Communications | 2 |
| Earth sciences | 1 |
| Information technology | 4 |
| Materials science | 1 |
| Mechanic engineering | 6 |
| Medical | 1 |
| Natural sciences | 1 |
| Packaging | 1 |
| Statistics | 1 |
| Transport | 2 |