我妥善保管原版拷貝。

I keep the master copy under lock and key.

Source: Tatoeba

Sentence Composition

1 我 wǒ
  1. I
  2. me
  3. my
2 妥善 tuǒshàn appropriate; proper
3 保管 bǎoguǎn
  1. to hold in safekeeping; to have in one's care
  2. to guarantee
  3. certainly; surely
  4. custodian; curator
4 原版 yuánbǎn original edition (of a book, etc.)
5 拷貝 kǎobèi
  1. copy
  2. to copy (loanword)