It's not a problem if 1st instance is already halfway done when the second just starts, their local variables are not related to each other.

如果第一个实例已经完成一半了，第二刚开始那就不是个问题，他们的局部变量互不相关。

youdao

If the two sides can't agree, everyone's taxes will rise sharply on January 1st, dealing a body-blow to the feeble economy.

如果双方不能达成一致，那么到明年1月1日，每个人都要面临大幅的增税，将给疲弱的经济造成严重挫折。

youdao

So, if the submitted Sake was deemed good enough for a 1st Class designation, or better still as Special Class designation, brewers were allowed to put this on the label.

所以 如果提交的清酒样品被鉴定为一级清酒， 或者更高例如特级清酒 那些酒商们会被允许在标签上。

youdao

We can ensure that taxes on 98 percent of the American people do not go up on January 1st if the House simply passes a bill that's passed the Senate.

WHITEHOUSE: Press Briefing by Press Secretary Jay Carney,

On January 1st, if nothing is done, everybody here is going to get a tax hike.

WHITEHOUSE: President Obama on Retaining Teachers and the American Jobs Act | The White House

Interest rates on those loans will double overnight, starting on July 1st, if Congress does not act.

WHITEHOUSE: President Obama Speaks on Student Loan Interest Rates in Colorado | The White House