In the case of homogeneous broadening only one mode can normally oscillate. 對于均勻加寬的情況，只有一個(gè)模能正常地振蕩。
As the gradient slackens, the Ganges and her tributaries begin to wander across an ever widening valley. 隨著(zhù)河床坡度減緩，恒河及其支流開(kāi)始緩緩流過(guò)一個(gè)加寬的河谷。
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