上海国际皮革展览会（SLF）自2004年首次举办以来，每年一届，至今已是第九届。

It is already the ninth year for SLF to be held since the first time in 2004.

youdao

上海国际皮革展览会（SLF）自2004年首次举办以来，每年一届，至今已是第九届。

It is already the ninth year for SLF to be held since the first time in 2004.

youdao