How can we meet the needs of today without diminishing the capacity of future generations to meet theirsSustainable development implies a broad view of human welfare, a long-term perspective about social development.

Write an essay which should cover：

1) describing the set of drawings below；

2) stating its main idea and

3) giving your comment.

STCW公约要求完成船员的基本安全培训，将有助于在船员间建立以安全为主导的观念。