Chemistry is the central science that connects physics and biology.
化学是连接物理学和生物学的核心科学。
What good is the warmth of summer, without the cold of winter to give it sweetness.
The best brands are built on trust, transparency, and timeless values.
Depression is the inability to construct a future.
海洋保护不是限制发展,而是为了更长久的发展。