zig number造句

例句与造句

1. The numbers " A " 2 " n " with even indices are called "'secant numbers "'or "'zig numbers "': since the secant function is odd, it follows from Andr?s theorem above that they are the numerators in the Maclaurin series of.
2. It's difficult to find zig number in a sentence. 用zig number造句挺难的