(located) at; (to be) in; to exist; in the middle of doing sth; (indicating an action in progress)[cedict]
体内
tǐ nèiㄊㄧˇ ㄋㄟˋ
within the body; in vivo (vs in vitro); internal to[cedict]
产生
chǎn shēngㄔㄢˇ ㄕㄥ
to arise; to come into being; to come about; to give rise to; to bring into being; to bring about; to produce; to engender; to generate; to appear; appearance; emergence; generation; production; yield[cedict]