manual feeding

例句：

1. 1. The baby needs to be fed manually every few hours.
   宝宝需要每隔几小时就手动喂食。
2. 2. Manual feeding is not suitable for all infants.
   对于所有婴儿来说，人工喂养并不适用。
3. 3.The elderly need to be fed manually because they have difficulty swallowing.
   老年人需要手动喂食，因为他们吞咽困难。