Progress is disappointingly slow.

进展慢得令人失望。

《柯林斯英汉双解大词典》

The Federal Reserve calls America's economic recovery "disappointingly slow."

美联储称美国经济的复苏慢的令人失望。

youdao

The result may be a disappointingly slow, fragile and jobless exit from recession.

其结果可能令人失望——缓慢地，不稳定地，且伴随着失业走出衰退。

youdao

The Federal Reserve calls America's economic recovery "disappointingly slow."

VOA: special.2010.11.05

The building of a reprocessing plant at Rokkashomura, in Aomori prefecture, has been disappointingly slow.

ECONOMIST: Japan and Britain

You may gawp or flinch, but your pulse, like that of Dr. Lecter himself, will stay disappointingly slow.

NEWYORKER: Hannibal

To foster some Islamic credentials of his own, perhaps, the president has seemed disappointingly slow to stand up for greater religious tolerance.

ECONOMIST: Banyan