英语访谈节目:美国民主党议员再次尝试弹劾特朗普

We will respond to the public's concerns by introducing structural changes to the current framework for the delivery of these services.
为了回应市民的关注，我们会重整现时负责食物安全和环境卫生服务的架构。

2.clear up 澄清

His testimony would help to clear up any doubt as to the cause of the death of the deceased.
他的证明有助于澄清有关死者死因方面的所有疑团。

3.engaged in 从事于

Police also said they have arrested around 200 youths who were said to be engaged in military training in Kenya's west.
警方还表示，他们大约逮捕了200名年轻人，据说，这些年青人参加了肯尼亚西部的军事训练。

4.pose a threat to 对……造成威胁

United Nations agencies warn that Burma's food shortages and escalating prices pose a threat to its food security.
联合国机构警告说，缅甸食品短缺和不断上涨的食品价格对该国的食品安全构成了威胁

5.block sb/sth from doing sth 阻止（不让）某人/某物做某事

If the crusts are thick enough, they can block water from circulating between the fuel rods.
如果这些外壳足够硬，那么它们就能阻止水在燃料棒之间的循环。