No space is allowed between sd and the directory list argument.

在sd和目录列表之间不允许有空格。

youdao

No space is allowed between the option and the argument.

选项与引数之间不可以有空格。

youdao

The North Korean military notice, carried on state-run media, also said South Korean ships and aircraft will no longer be allowed passage through the North's territorial space.

VOA: standard.2010.05.27

There was no democratic space allowed, we thought, in Egypt.

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This deduction tends to be an audit flag, so remember the space must be used exclusively for work (no personal use allowed), and be sure to keep good records.

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