be composed of

由…组成

be burned to a crisp, be busy doing, be busy with, be capable of, be careful of, be careful with, be caught up in, be cautious of, be centered on, be central to, be certain of, be certain to do sth, be characteristic of, be charitable to, be civil to, be clear about, be close to, be committed to doing sth., be comparable to, be comparable with, be concerned about, be concerned with, be confronted with, be connected to, be conscious of, be considerate of, be considerate of..., be content with, be contrary to, be convinced that, be covered with, be crazy about, be deep in thought, be deserving of, be detached from, be different from, be disagreeable to, be disgusted with, be doubled up, be due,