名词
中文翻译：手动呼叫
同义词：
['manual communication', 'manual instruction', 'manual guidance']
例句：
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1. In the olddays, people used to manually call for help when they were lost in the forest.
在旧时代，人们在森林中迷路时会手动呼救。
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2. The manual calling system is designed to assist visually impaired individuals.
手动呼叫系统旨在帮助视障人士。
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3.The manual calling device was used to alert the police when someone needed immediate assistance.
手动呼叫设备被用来在有人需要紧急援助时通知警察。