核心问题
An explosion will probably occur at any minute. (The Structure of Technical English, p. 8) [原译]任何时候都可能发生爆炸。(中译本)
词典解答
根据 Chambers Universal Learners' Dictionary 的解释, at any minute 除作“任何时候”解之外, 还可作“很快”“马上”“随时”解, 相当于 at any moment。EED 的释义是: If you say that something will happen at any minute, you mean that it is likely to happen very soon. 在本例中取这个含义比较合理, 因为一个炸弹只能在一定的时间内爆炸, 而决不会在任何时间爆炸。为使大家进一步掌握 at any minute 和 at any moment 这一含义, 下面再举两个例子:
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He will be here at any minute. 他很快就会到这里来。
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The train should arrive at any moment. 火车应当马上到达。