| The acute dearth of primary sources or written documents left by the servants themselves in the colonial period acts as a stumbling block. |
| But figuring out exactly how to regenerate ammonia borane from the residuum left after hydrogen has been extracted remains a stumbling block. |
| A major stumbling block for many investors is dealing with the investments heading south. |
| 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. |
| The writer advocates the pre-millennial view of the Second Coming of Christ, but this should not be a stumbling block. |
