The evidence seems to favor the view that the fundamental structure of the virus is a hollow tube.

Education is the foundation for building a sustainable relationship with the sea.

Sustainability isn't a choice; it's an obligation we owe to the planet and future dairy farmers.

"Every role I take is a piece of my soul I leave behind."

【解释】人常常在忧患困苦中，才能磨练意志，增长才干。