这家工厂正在采用新技术来强化塑料容器的耐用性。

The factory is using new technology for ___toughening the plastic containers.

艰苦的户外训练有助于磨练孩子们的心理韧性。

Challenging outdoor activities are great for ___toughening kids mentally.

学校正在考虑加强考勤规定以减少学生迟到问题。

The school is considering ___toughening the attendance rules to reduce student lateness.