The first conditional statement is used for input validation.

第一个条件陈述式用于输入验证。

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The first phase of the education and research campus was given conditional approval by Highland councillors last month.

BBC: Concept art of new Inverness College

That's money which must be spent this year, but the first minister says an announcement about its destination is conditional on a deal over the budget.

BBC: Deadline looms for Welsh government seeking budget deal

He is the first US president to make US support for Israel at the UN conditional on Israeli concessions to the Palestinians.

CENTERFORSECURITYPOLICY: American Jews and the Liberal Art of Demonization