It is very seldom that a character or part of a character moves in a straight line.

很少有角色或者角色身上某个部位的运动是直来直去的。

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Therefore, a persuasive writer should prepare his paper with meticulous care and also prepare himself against strong responses that seldom come to writers of straight-forward exposition.

因此，写作论说文时，应特别仔细谨慎，并自我锻炼，以备面临直截了当的说明文不会引起的强烈反弹。

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Companies seldom fall in a straight line so there will be plenty of false rallies but nonetheless the trend will be down.

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