They make a lot of sense in complex scenarios where a lot of processing and bookkeeping is needed for the life cycle of complex session beans.

在一些复杂场景中，当复杂会话 bean 的生命周期中需要执行大量的处理和簿记时，这些方法有很大的用处。

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Try to do this when school is in session so you can get a good idea of what life is really like on campus.

参观时间最好是在学期内，这样可以更好地了解真实的校园生活。

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