完善资本市场基础制度。
我：We improved basic system for capital market.
正：The underlying systems of the capital market were improved.
习得：
基础制度 underlying systems
资本市场 capital market
完善 improve
注意下 定冠词the 的用法，带有定语从句的名词或者of 前起修饰作用的名词前添加定冠词。
扎实推进农业农村、社会事业等领域改革。
我：We boosted reform in agriculture, rural villages and social careers.
正：We made solid strides in reforms related to agriculture,rural development,and social programs.
扎实推进 make solid strides in
related to 关于...的
农村-增译 农村发展
社会事业 social programs
共建“一带一路”稳步推进。
我：We worked together with other countries to advance the policy of the Belt and Road steadily.
正：Steady progress was achieved in the joint pursuit of the Belt and Road Initiative(BRI).
习得：
稳步推进 steady progress was achieved in
共建 in the joint of pursuit of
“一带一路” the Belt and Road Initiative (BRI)
海南自由贸易港建设等重大举措陆续推出。
我：Significant measures such as setting up Free-trade zoon in Hainan were launch out constantly.
我：Major measures to develop the Hainan Free Trade Port and other initiatives were launched.
习得：
重大举措/方案 initiatives
自由贸易港建设 to develop Free Trade Port
陆续推出 be launched.
成功举办第三届中国国际进口博览会、中国国际服务贸易交易会。
我：And we successfully held The 3rd session of the International Import Expo of People's Republic of China and the International Trade and Service Exhibition.
正：The third China International Import Expo and the China International Fair for Trade in Services were hosted successfully.
习得：
举办 host
中国国际贸易服务交易会 the China International Fair for Trade in Services.
专有名词前，用定冠词the。
被动句更地道。
