\(f\) is a bijection,
Цены на один вид жилья в России снизились20:41
，这一点在WPS下载最新地址中也有详细论述
wire = { id = "com.squareup.wire", version.ref = "wire" }
Output from Ray Wu’s 2-D homochromatography method. Credit: Jay E. et al. Nucleic Acids Research (1974).