关于青年担当的英语表达，综合权威资料整理如下：

一、核心责任与担当

1. "The responsibility is the beginning of growth； the mission is the driving force of progress."（责任是成长的起点，使命是进步的驱动力）

2. "Youth are the future leaders and contributors, with the responsibility to uphold justice, protect the environment, and drive innovation."（青年是未来领导者和贡献者，有责任维护正义、保护环境和推动创新）

二、行动倡议与实践方向

1. "Be honest and do things honestly. The integrity of youth is the cornerstone of society."（诚实为人，言行一致。青年的诚信是社会的基石）

2. "In the tapestry of life, we must stand up for what is right, preserve our natural heritage, and expand our horizons."（在生活的织锦中，我们必须坚守正义，保护自然遗产，拓展视野）

3. "As lifelong learners, we have the responsibility to cooperate with others and fulfill our duties. Our destinies are intrinsically linked to global challenges like climate change and poverty."（作为终身学习者，我们有责任与他人合作、履行职责。我们的命运与气候变化、贫困等全球性挑战紧密相连）

三、时代背景与历史使命

1. "The new era presents profound transformations and unprecedented opportunities for China, demanding proactive engagement from the youth."（新时代带来了深刻变革和历史机遇，要求青年积极投身其中）

2. "The youth of today are not just beneficiaries of progress but also builders of the future. Their actions shape the trajectory of society."（今天的青年不仅是进步的受益者，也是未来的建设者。他们的行动决定社会的走向）

这些表达既体现了青年在个人成长中的责任担当，也彰显了他们在国家发展、全球治理中的历史使命，可用于作文写作或演讲表达。