onionskin

The clerk inserted several onionskins into the typewriter to make carbon copies.

职员把几张洋葱皮纸放进打字机，以便复写出多份副本。

Old letters written on onionskin are very light and nearly transparent.

写在洋葱皮纸上的旧信件很轻，而且几乎半透明。

Print the final record on onionskin because it is strong and takes less space.

把最终记录打印在洋葱皮纸上，因为它既结实又不占空间。