The United States is, however, growing increasingly concerned that the steps towards Guinea-Bissau's democratic development may prove unsustainable as the spectre of narcotrafficking threatens to overwhelm the country.
不过，美国日益感到关切的是，由于毒品贩运的幽灵有可能在该国势不可挡，几内亚比绍的民主发展步骤可能难以为续。