环境问题诸如噪音和警戒的水平也许会妨碍新行为的学习。
Environmental issues such as noise and level of alertness may interfere with learning new behaviors.
环境问题诸如噪音和警戒的水平也许会妨碍新行为的学习。当确定了什么是有帮助的，什么是有妨碍的后，增加有帮助的部分，排除其他部分。
Environmental issues such as noise and level of alertness may interfere with learning new behaviors. After identifying what helps and what hinders, increase the helpers and eliminate the rest.
因为这些留守儿童容易发生事故，易产生心理、行为和学习问题，所以老师应该承担额外的照顾责任，并且应该给他们提供食宿。
Vulnerable to accidents and to developing emotional, behavioral and learning problems, their care requires additional responsibilities from teachers and the provision of boarding facilities.
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