n. 人或事物的特点、特性, personality, individuality

n. 一个人（跟“集体”相对）, individual, personal (as opposed to "the collective"); 自称，我（在正式场合发表意见时用）, (used on formal occasions to address oneself when one expresses one’s opinion) oneself

n. 事物的根源或最重要的部分, foundation, base; adj. 主要的, 重要的, basic, fundamental, essential; adv. 本来，从头到尾（多用于否定式）, at all, simply (mostly used in a negative form)

pron. 各人自己，各个方面自己的一方, each, respective

n. 概括事物的共同特点所得出的认识, concept, idea

v. 改变旧有情况，使有所进步, ameliorate, improve