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ADJ-GRADED
松弛的;没拉紧的
Something that is slack is loose and not firmly stretched or tightly in position.
例句
The boy's jaw went slack.
男孩张大了嘴巴。
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ADJ-GRADED
萧条的;清淡的;不景气的
A slack period is one in which there is not much work or activity.
例句
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。
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ADJ-GRADED
松懈的;懈怠的
Someone who is slack in their work does not do it properly.
例句
Many publishers have simply become far too slack.
许多出版商就是变得过于懈怠了。
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VERB
疏忽;懈怠;松劲
If someone is slacking, they are not working as hard as they should.
例句
He had never let a foreman see him slacking.
他从未在哪个工头面前表现出丝毫懈怠。
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PHRASE
接手他人不再做的工作;补位提供
To take up the slack or pick up the slack means to do or provide something that another person or organization is no longer doing or providing.
例句
As major airlines give up less-traveled routes, smaller planes are picking up the slack.
由于大型航空公司放弃了乘客较少的路线，一些较小的飞机正在加紧补位。