The warehouse staff removed the slack in the straps before loading the pallets.

倉庫人員在裝載棧板前，先把綁帶鬆弛的部分拉緊。

Please leave a little slack in the cable so the projector can be moved.

請讓電線留一點鬆弛的長度，這樣投影機才能移動。

There was too much slack in the luggage belt, so the suitcase fell off the cart.

行李綁帶太鬆垮了，所以行李箱從推車上掉了下來。