1.b> (), ; this machinery operates day and night - ; his mind always operated slowly , ; to operate under a theory i> ;
2.b> 1) (), , ; different drugs operate on different bodily organs ; several causes operated to bring on the war ; this law operates to our advantage ;
2) i> (), i> ; it may operate remarkable changes ;
3.b> (on) .i> (, ), ; to operate on the brain , ; to operate on a patient for appendicitis ; he must be operated on at once ; the doctor operates from 8 to 10 8-i> 10 ;
4.b> / i> () / ; the army operated over a wide area ; to operate from / out of / . i> , i> ; large banks that operate nationwide , ;
5.b> .i> .i> 1) (), , / ;
2) (), ; to operate a machine / , / ; can you operate a car? ?
6.b> (), , ; to operate a factory ;
7.b> i> (), .
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