hold acknowledge signal

例句：

1. 1. I need to hold my phone tightly to avoid losing it in the crowd.
   我需要紧紧抓住我的手机，以免在人群中丢失。
2. 2. The old man held his grandson close as they walked through the park.
   老人紧紧抱着他的孙子，当他们穿过公园时。
3. 3. Holding hands with her husband made her feel closer to him.
   与丈夫牵手让她感觉更靠近他。