Example sentences of "can usually be [vb pp] by [noun] " in BNC.

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1 More information can usually be gained by phone than by post .
2 The existence and magnitude of a beneficial effect of treatment can usually be determined by meta-analyses of unbiased trials , such as that of the treatment of early breast cancer .
3 On occasions , some of the rules can appear esoteric when viewed in isolation but can usually be explained by reference to one of the General Principles .
4 ( ii ) A high mortality of overwintered L3 on the pasture occurs in spring and only negligible numbers can usually be detected by June .
5 These two values can usually be varied by controls mounted on the gyro itself or , in some cases , also changed at the transmitter .
6 Providing such deficits are kept within manageable proportions they can usually be financed by means of capital inflows such as foreign investment or incurring debts to overseas banks .
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