单词：specialises
vi. 专门从事, 专攻（specialise的第三人称单数形式）
v devote oneself to a special area of work
v be specific about
v suit to a special purpose
v become more focus on an area of activity or field of study
v evolve so as to lead to a new species or develop in a way most suited to the environment
v be specific about
v suit to a special purpose
v become more focus on an area of activity or field of study
v evolve so as to lead to a new species or develop in a way most suited to the environment