adj
1 [pred 作表语] ~ of sth made up or formed from sth （由某事物）组成或构成
*Water is composed of hydrogen and oxygen. 水是由氢和氧化合而成的.
* The committee was composed mainly of teachers and parents. 委员会主要由教师和学生家长组成. =>Usage at comprise 用法见comprise.
2 with one's feelings under control; calm 控制住感情的; 克制的; 镇静的; 平静的
*a composed person, manner, look 镇静的人、态度、表情. composedly/ kEm5pEUzIdlI; kEm`pozIdlI/ adv
*She talked composedly to reporters about her terrible ordeal. 她沉着地向记者谈了自己可怕的经历.

adj
seeming calm and not upset or angry
　He appeared very composed despite the stress he was under.
a composed salad is arranged carefully on a plate rather than being mixed together