短语讲解：
1. A billion people around the world suffer from neglected tropical diseases, and the global health community is working to develop new drugs, vaccines and diagnostics.
suffer from因(疾病)而痛或不舒服;因...而更糟;受...之苦
例句：She often suffers from headaches.
她常常头痛。
2. The international collaboration, committed to developing and delivering new drugs and therapies, has launched a four-year program for diagnosis and treatment of kala azar in India and Bangladesh.
commit to对…作出承诺, 承担义务, 担负责任; 使(自己)致力于…
例句：He has committed himself to the cause of
