When working with string data, you can use either double quotation marks or single quotation marks to delimit them.(在處理字符串?dāng)?shù)據(jù)時，可以使用雙引號或單引號分隔。)

Any values containing a semicolon, single quotation marks, or double quotation marks must be enclosed in double quotation marks.(任何包含分號、單引號或雙引號的值必須用雙引號引起來。)

By default, SGML requires that all attribute values be delimited using either double quotation marks (ASCII decimal 34) or single quotation marks (ASCII decimal 39).(默認(rèn)情況下，SGML要求所有的屬性值用雙引號(十進(jìn)制ascii值34)或者單引號(十進(jìn)制ascii值39)來分隔。)

It's worth noting that strings are encoded using single or double quotation marks.(另外一點(diǎn)值得注意的是字符串是通過單引號或雙引號被編碼的。)

If you need quotation marks inside the alias, use double quotation marks.(如果您需要在別名中使用引號，那么可以使用雙引號。)

Within in the string, you can use as many single and double quotation marks as you like (see Listing 4).(在該字符串中，您可以使用任意多的單引號和雙引號(參見清單4)。)

It is recommended that you enclose the trace mask with double quotation marks to avoid possible misinterpretation of the asterisk character by the operating-system shell.(建議您用雙引號將跟蹤屏蔽括起來，以免操作系統(tǒng)shell對星號發(fā)生錯誤判斷。)

Values are enclosed by single or double quotation marks.(值用單引號或雙引號括起來。)

Doing this, however, is generally a bad practice: It requires the name to always be enclosed in double quotation marks and can easily confuse someone else who may be maintaining your code.(但是，這么做通常是不好的做法：它要求名稱總被括在雙引號中，很容易把維護(hù)代碼的其他人弄糊涂。)

If a variable contains whitespace, the double quotation marks keep the variable expansion intact as a single argument.(如果一個變量包含空格，雙引號會按原樣把變量展開為一個參數(shù)。)