This is because this time, the if statement on line 2 is now true, and "o" is simply returned. The recursion unwinds as follows.
这是因为这一次，第2行中的if语句现在为true，并且简单地返回了“o ”。
And you can use letter collections (as you might in a regular expression), for example, to list the files with a "c" or "o" extension, as shown in Listing 2.
并且您可以使用字母集合(就像您可能在正则表达式中使用的那样)，例如，用于列出具有“c”或“o”扩展名的文件，如清单2所示。
This paper reports the synthesis of herbicide ofprimisulfuron-methyl, the method uses 2-amino-4,6-dihydroxylpyrimidine and O-chlorobenzoic acid as the raw materials.
本文主要报道了以2- 氨基-4， 6-二羟基嘧啶和邻氯苯甲酸为起始原料合成除草剂氟嘧磺隆，以及详细地介绍了各个中间体的合成方法。
I am sorry to say that Mrs Jenkins, our canteen manageress, is Ill. in hospital. As you know, the cafeteria is very busy between 11 and 2 o 'clock.
我很遗憾地告知诸位：我们的餐厅经理金肯斯夫人因病住院。大家都知道，11点至2点期间餐厅最繁忙的时候。
The compound 6-(2-methoxy phenoxy)-1, 4-dihydrogen-4-oxo-3-ethyl quinoline carboxylate is prepared with o-methoxyphenol and p-chloronitrobenzene as materials and through four-step reaction.
以邻甲氧基苯酚与对氯*为原料，经四步反应合成6-（2-甲氧苯氧基）-1，4-二氢-4-氧代-3-喹啉羧酸乙酯。经抗鸡球虫实验证明具有抗球虫效果。
The formula and structural formula as to complex compound which was formed by reaction of 2-methylimidazole, O-hydroxybenzoic acid and zinc have been stud. ed by using IR, NMR, and MS.
本文运用IR、NMR、MS等分析测试手段，研究了2-甲基咪唑和水杨酸与锌的络合物的分子式和结构式。
As you know, the cafeteria is very busy between 11 and 2 o 'clock.
大家都知道，11点至2点期间餐厅最繁忙的时候。
Soluble Fe compound expressed as Fe 2 O 3 – 0.038% (Max. )
可溶性铁化合物表示氧化铁，最大含量为0.038%。
RESULT: A deoxyuridine was isolated from 70% alcohol extract and identified as as 5-methyl-3′, 5′-di-O-(p-chlorobenzoyl)-2′-deoxyuridine.
结果：从广枣70 %乙醇提取物中分离出一个胸腺嘧啶脱氧尿苷类化合物，结构为5-甲基-3′ ，5′-二氧-（对氯苯甲酰基）-2′-脱氧尿苷。
RESULT: A deoxyuridine was isolated from 70% alcohol extract and identified as as 5-methyl-3′, 5′-di-O-(p-chlorobenzoyl)-2′-deoxyuridine.
结果：从广枣70 %乙醇提取物中分离出一个胸腺嘧啶脱氧尿苷类化合物，结构为5-甲基-3′ ，5′-二氧-（对氯苯甲酰基）-2′-脱氧尿苷。
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