1) There aren't many situations in everyday life that would need a strong memory.
2) There are quite a few situations in everyday life where a strong memory is required.
1) & 2) "日常生活で高い記憶力を必要とされる場面があまりない" という意味です.
日常生活で : in everyday life.
高い記憶力を必要とされる場面 : situations that would need a strong memory / situations where a strong memory is required.
あまりない : There aren't many / There are quite a few.
I don't think there are really that many everyday life situations where you'd actually need a strong memory.
linaさん
ご質問どうもありがとうございます。
下記の言い方では、いかがでしょうか。
I don't think there are really that many everyday life situations where you'd actually need a strong memory.
--- everyday life situation = 日常生活レベルの場面
--- really that many = こんなにたくさん(...はない)
ご参考にしていただければ幸いです。