OIS是美国科学院眼科的年度大会前直接。

OIS is directly prior to the American Academy of Ophthalmology's annual convention.

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终于是准时醒来，在驱车去大会前，又练习超过1次。

Finally woke up at the right time and then did one more practice speech, before driving to the event.

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在共和党大会前，49%的已登记共和党对今年的选举抱有极度或高度的热情。

Before the Republican convention, 49 percent of registered Republicans were extremely or very enthusiastic about voting this year.

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