1、She has always been introvertive, preferring to spend time alone rather than socializing with others.
她一直都是个内向的人，更喜欢一个人的时光，而不是与他人社交。
2、His introvertive nature often makes it difficult for him to express his thoughts and feelings to others.
他内敛的性格经常使得他难以向他人表达自己的想法和感受。