名词 heartwood:

1. the older inactive central wood of a tree or woody plant; usually darker and denser than the surrounding sapwood

heartedadj.有 ... 之心的； 呈 ... 心情的动词heart的过去式和过去分词形式heartn.心；内心；中心；要点；红桃v.将…记在心里，铭记；鼓励Heart development心脏发育heart-searchingadj.自我检讨的；严厉的heart of a matter事情的实质Heart-nosed batn.非洲假吸血蝠heart of the lake湖中心heart rate tester心跳测试仪heart pump analog心功能泵模拟Heart attribution心理归属heart of the city市中心heart wall motion心(室)壁运动