例句與造句

1. meschach computes fast fourier transforms, extracts columns and rows, and computes eigenvalues of symmetric matrices
   meschach能計算快速傅立葉變換（fastfouriertransform）、提取列和行以及計算對稱矩陣的特征值。
2. It's difficult to find extract column in a sentence. 用extract column造句挺難的