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| komplika; implika; komplikita; kunmetita; malsimpla | |||
| kompleksa (sub kompleksaj kondiĉoj - в условиях сложной обстановки Alex_Odeychuk) | |||
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| malfacile (трудно Alex_Odeychuk) | |||
| сложный: 12 phrases in 8 subjects |
| Chemistry | 1 |
| Esperanto | 1 |
| Firefighting and fire-control systems | 1 |
| Formal | 1 |
| General | 4 |
| Grammar | 2 |
| Linguistics | 1 |
| Management | 1 |