1. Grandpa seems to be in his second childhood.
    祖父好象有些老年痴呆。

1. second childhood的解释

1. 第二童年;老糊涂：95.Second banana 喜剧演员的配角,搭挡 | 96.Second childhood 第二童年;老糊涂 | 97.Second wind 恢复精力

2. 老年智力衰退期：second chamber 上议院 | second childhood 老年智力衰退期 | second class 第二堂课

3. second childhood的意思

3. 老糊涂：142.second banana 配角 | 143.second childhood 老糊涂 | 144.search me 我可不知道

4. second childhood

4. 老年昏聩状态：老伙计,老朋友/old buck;old egg | 老年昏聩状态/second childhood | 老牌优质汽车/vintage car

1. 第二童年;老年昏聩状态
    If you say that an old person is in their second childhood, you mean that their mind is becoming weaker and that their behaviour is similar to that of a young child.

second childhood的近义词

    e.g. ...his rapid descent into a second childhood.
           他迅速恶化至老年昏聩状态

1. mental infirmity as a consequence of old age
    sometimes shown by foolish infatuations

    Synonym: dotagesenility