While there are exceptions (IMAP IDLE, for example, which Spring Integration also supports) normally you need something to poll the email account for new emails.

在出现异常的时候(比如spring Integration也支持的IMAP IDLE)，你通常需要一些东西来轮询电子邮件帐户以查找新的电子邮件。

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Guyu one that spring silkworm breeding farm to be invested in war, therefore, Qingming to Guyu just idle period, was also a bright and sunny, just merry.

谷雨一到，农家就要投入饲养春蚕的大战，所以，清明至谷雨这段时间正好闲着，又值风和日丽，正好行乐。

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In November, it will be moved to a plant in Michigan, leaving Spring Hill's plant idle.

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