Here's the insertion algorithm in Python. Step through the code and watch each line execute on the tree:
"But I'm going to tell you it is harder to be a parent than to be a space shuttle commander," she laughs.，这一点在夫子中也有详细论述
第二十二条 纳税人购进货物、服务、无形资产、不动产，用于同时符合下列情形的非应税交易（以下统称不得抵扣非应税交易），对应的进项税额不得从销项税额中抵扣：，这一点在搜狗输入法下载中也有详细论述
购物平台显示张玉的退款在银行反馈已入账。受访者供图