Encara no tenim significats per a "be no slackness".
1There must be no slackness.
2It was above all essential that there should be no slackness: "Work," said the Prince, "must be work."
3There was no slackness in his watch; he kept us up to scratch.
4In fact, about him was no slackness, no sprawling abandon of the native in relaxation; but always a taut efficiency and a never-failing self-respect.
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