To get the information stored in your long-term memory, it is better to look at the information regularly for short periods of time than just once for a long period of time.
To memorize something, you should look at it many times for short periods of time instead of just looking at it once for a long time.
「一回の長時間見るより短くても繰り返し見るほうがいい」＝ To get the information stored in your long-term memory, it is better to look at the information regularly for short periods of time than just once for a long period of time. / To memorize something, you should look at it many times for short periods of time instead of just looking at it once for a long time.
ボキャブラリー
long term memory ＝ 長期記憶
memorise ＝ 暗記する
information ＝ 情報
store ＝ 保存する
look at ＝ 見る
regularly ＝ 定期的に
short period of time ＝短い間
just once ＝ 一回だけ
long period of time ＝ 長い間
instead of ＝ ～の代わりに、～ではなく
イギリス 
