| The biggest stumbling block for most people involves the few requisite Perl modules for database support. |
| Finance is the only stumbling block as the Australians are extremely keen on the idea. |
| It's a stumbling block, and most of the lyrics are just kind of nonsense, jibber-jabber. |
| But figuring out exactly how to regenerate ammonia borane from the residuum left after hydrogen has been extracted remains a stumbling block. |
| United's possible bid for Inter defender Blanc could hit a stumbling block with the impending closure of the Serie A transfer window. |
| The issue has been a major stumbling block to normalizing diplomatic relations between North Korea and Japan. |
