Same for gravity, two concepts, so it's -- which is quite humbling, as a, you know, if you're a teacher, and you look before and after, that's quite worrying. They do worse in tests afterwards, after the teaching.
重力や引力についても同じです　これは実に恥ずべきことです もし あなたが先生で 教える前と教えた後を比較してみると とても心配になりますよ　学校で習った後の方がテストの点が悪いのです