Example sentences of "primary [noun] be usually " in BNC.
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| 1 | They may also refer to the relation between structures and the coast , in which case the primary division is usually between longitudinal and transverse coasts . |
| 2 | Primary data is usually obtained by means of questionnaires and structured interviews , administered by trained personnel . |
| 3 | This primary sore is usually a solitary ulcer , and by the time it has appeared the local lymph nodes are invariably involved and treatment of the chancre with antiseptics or antibiotic ointments will have no effect on progression of the disease . |
| 4 | The disk is round to subpentagonal , high with almost vertical sides ; covered with many plates amongst which the centrodorsal and primary plates are usually distinct ; diameter up to 8 mm . |
| 5 | Although it has a malevolent appearance , the primary chancre is usually completely painless and , unless secondary bacterial infection occurs , there may be no symptoms . |