So if in fact I wanted to make sure this was a number, I should have done something like either try and convert it to a number, which of course failed here, or put in a check to say where it is.
因此实际上如果我想确保，这是一个数字的话，我们的课程上的代码，在这里失败了，你或许应该在这里，放一个检查的东西。
Arsenal carved out the better chances but their finishing touch deserted them in normal time as Ray Kennedy, George Graham and Charlie George failed to convert decent opportunities.
阿森纳在法定时间获得绝佳的破门机会却没有成功把握，雷肯尼迪、乔治·格拉汉姆与查理·乔治悉数错失临门一脚。
But Shevchenko, Drogba and Ballack all failed to convert chances that came their way.
但是这场比赛中，舍普琴科，巴拉克，德罗巴都没能抓住自己的得分机会。
But Shevchenko, Drogba and Ballack all failed to convert chances that came their way.
但是这场比赛中，舍普琴科，巴拉克，德罗巴都没能抓住自己的得分机会。
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