| Subject | English | Russian |
| Makarov. | be third in line for the throne | быть третьим в очерёдности престолонаследования |
| gen. | be third in line for the throne | быть третьим в очерёдности престолонаследования |
| Makarov. | he was the third man in the line | он был третьим в очереди |
| trav. | level line of third rank | промежуточная горизонталь |
| Makarov. | the third line from the top | третья строка сверху |
| gen. | third in line | третий в очереди |
| Gruzovik, mil. | third line | запасная позиция |
| O&G | third line of the pipeline | третья нитка трубопровода (– того же самого; рек MichaelBurov) |
| commun. | third line support | техническая поддержка (специалистами; First line support normally involves dealing with customers, clients or employees directly to resolve their issues. Normally the issues are fairly basic. Second line support should take over a support request once it has been established there is a problem with the supported "system" and it is not to do with user training, user environment, etc. Second line support will liaise with third line support for any highly technical issues. Second line support is usually the middle-man between first line and third line Third line support is a non-customer focused base of technical staff that will investigate and resolve problems. 4uzhoj) |
| mil., BrE, obs. | third line transport | корпусное звено подвоза |
| mil., BrE, obs. | third line transport | армейское звено подвоза |
| mil., arm.veh., BrE | third-line recovery | третий эшелон эвакуации повреждённой техники |
| mil., arm.veh., BrE | third-line recovery | армейский эшелон эвакуации повреждённой техники |
| med. | third-line therapy | терапия третьей линии (Andy) |
| med. | third-line treatment | терапия третьей линии (Andy) |