The problem is that the compound has mixed effects in the brain, a not unusual occurrence with psychoactive drugs.

问题在于，这种化合物对大脑有混合作用，这种情况在服用精神药物时并不少见。

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It explained the basic reason for protanopia and deuteranopia occurrence with the equilibrium theories.

它用平衡理论解释了发生红色盲和绿色盲的根本原因。

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If a programming error occurs in the product, communicate the occurrence with a dialog, and log it.

当产品发生了一个内部程序错误，使用对话框交互发生事件，并且做历史记录。

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But experts say that you can't associate a specific environmental occurrence with climate change, so there's nothing conclusive on that front.

NPR: In Portugal Another Season of Forest Fires

This is a common occurrence with people who are so influenced by what others believe they should do in their careers that they become disconnected from themselves.

FORBES: Five Most Effective Ways to Invest in Your Career

The 925 model also sports an 4.5-inch AMOLED screen, so while it matches the resolution of the existing 920 (1, 280 x 768), those on-screen blacks -- a regular occurrence with the Windows Phone OS -- should be notably deeper than the LCD competition.

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