arr := [1, 2, 3, 4, 5];
to introduce two new things.，推荐阅读新收录的资料获取更多信息
作为环卫工人，几十年间，张金海最早看见城市的黎明，也最早感知天空的变化。他手机里存着许多随手拍下的天空照片——从灰蒙蒙一片，到开始透亮，再到如今湛蓝如洗，这一张张照片，是东营空气质量变迁的直观见证。，更多细节参见新收录的资料
Knowing which fungi was present "could inform where and how we plant trees, and also which pieces of tree we plant", Verhoeven said.，详情可参考新收录的资料
The changed guidance on the use of cross-sex hormones applies only to the NHS, not to doctors working privately.