我的法语知识在慢慢淡忘。

I'm forgetting my French.

那所谓的新理论似乎可能被淡忘。

It seems that the so-called new theory is likely to sink into oblivion.

每次爬山的时候，大多酣畅淋漓，也许周遭的风景不曾细细品味，但是征服大山的那种感觉，久久不会淡忘。

Each time you climb mountain ,you will be full of sweat or do not appreciate the surroundings carefully,but the feeling of conquering mountain will be kept in your mind forever.