Troy stepped forward and whistled a double note.

托伊迈步向前，用口哨吹了一个双音。

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Note the use of double quotes, which ensures that quoted arguments in the original are retained and identified properly.

请注意双引号的使用，它确保了原始命令中引用的参数被保留并得到正确识别。

youdao

Note that various escape characters must be used such as \ "for double quotes."

主要必须使用各种转义字符，如双引号用\ “表示。”

youdao

But the number of patients getting the medicine could double, according to a research note from James Reddoch, biotech analyst at Friedman, Billings, Ramsey.

FORBES

At any rate, note the cynics, it will mean double entrance money.

ECONOMIST: Goethe

Note that there is likely to be some double-counting of STEM workers working in tech industries.

FORBES: Methodology For Forbes' Best Cities For Tech Jobs List