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Listing 4 shows the beginning of the sample wrapper script, which defines a usage message that displays if you execute the script with no arguments or the wrong number of arguments.

清单4给出了此示例包装器脚本的开始部分，其中定义了一个使用消息，如果在没有参数或参数数量错误的情况下执行该脚本，就会显示这个消息。

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In addition, the study revealed no evidence of increasing risk with progressively increasing number of calls, longer call time, or years since beginning cell phone use.

此外，报告显示并没有证据表明致癌的风险会随着通话次数、时长以及使用手机年限的增加而增加。

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That chain is in a circle that goes round and round, with no beginning and no end.

FORBES: Every Person Matters in a Company, and There is No Such Thing as an Insignificant Position

With no action, investment tax rates will soar beginning January 1, 2013, with the top tax rate on capital gains jumping to 23.8 percent from 15 percent and the top tax rate on dividends nearly tripling to 43.4 percent from 15 percent.

FORBES: To Avoid A Fiscal Cliff Dive, Extend Today's Dividend Tax Rates

Shares of several closed end funds and preferred shares funds cratered beginning at 2pm. with no explanation.

FORBES: Some Agreement on Speed Bumps for Market Panics