Hi Takeshi,
A Chinese friend of mine has proposed this
#: sphinx/registry.py:464
#, python-format
msgid ""
"the extension %r was already merged with Sphinx since version %s; this"
"extension is ignored."
msgstr "扩展 %r 已合并至 Sphinx (自版本 %s 开始);该扩展被忽略。"
to maintain relative order of %r and %s.
But perhaps transifex will complain about added parentheses?
I think I once hit against such a complaint while working
on French. Maybe it was only a warning.
Anyway, other proposals without parentheses are welcome
of course!
Jean-François