由于他们常常害怕不熟悉的厕所，因此必须特别注意，确保厕所安全和适合小孩子使用。
Because children are often frightened by unfamiliar latrines, particular care will be needed to ensure that latrines are safe and physically suitable for children.
这里最主要的考虑因素是老人和小孩的安全和使用方便。
Here are the most important considerations of the elderly and children safe and easy to use.
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