[Tails-l10n] translation newbie doubt: keywords?

so if i find this messsage:
msgid "Encrypt Clipboard with _Passphrase"

shall i translate it as

msgstr "Encriptar Portapapeles con _FraseClave"

or

msgstr "Encriptar Portapapeles con _Passphrase"

is the last word translatable?

btw it looks weird here in the interface in spanish lang... (is on the
little icon on the top menu)

cheers

emmaP