In developing countries, import substitution as a way to jump-start economic diversification can work for a while; but, over time, as productivity growth lags and comparative advantage is over-ridden, growth grinds to a halt.
在发展中国家，以进口替代作为经济多样化的启动手段可以在短期内见效，但假以时日，随着生产率增长的落后和比较优势弱化，增长会陷入停滞。