英汉词典

1. 松弛的;没拉紧的
    Something that is slack is loose and not firmly stretched or tightly in position.

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    e.g. The boy's jaw went slack.
           男孩张大了嘴巴。

2. 萧条的;清淡的;不景气的
    A slack period is one in which there is not much work or activity.

    e.g. The workload can be evened out, instead of the shop having busy times and slack periods.
           商其工作量可以平均开来，不像商店那样有时很忙，有时很闲。

3. 松懈的;懈怠的
    Someone who is slack in their work does not do it properly.

    e.g. Many publishers have simply become far too slack.
           许多出版商就是变得过于懈怠了。