absorb vt. 吸收,吸引,接受,并入,使专心
absorb原义为“吸收”，引申词义为“吸引（注意力，精力等）”，常用于be absorbed in sth. 表示“被……吸引住，专注于”
Oil absorbency: The capability of a paper to absorb oil.
吸油性:纸张的吸油能力。
His whole soul is absorbed in saving his country.
他一心扑在拯救祖国的事业上。
He found his brother absorbed in the watching of the match.
他发现弟弟在聚精会神地看比赛。
concentrate vt. 集中,集结;浓缩
concentrate除了本意之外，更多是指“集中精神，全神贯注，聚精会神”，多与on或upon连用。
concentrate sugar solution into syrup
将糖的溶液浓缩为糖浆
We concentrated intensive fire on the enemy.
我们集中密集的火力向敌人攻击。
We must concentrate our attention on efficiency.
我们必须把注意力集中在效率上。
