Environment
2010-01-01 00:00:00
China’s foreign Trade 2010年2期
Ten years ago， it was impossible to boil an egg in Tibet. Thelack of oxygen in the air made the boiling point of water too low forproper cohesion of the yolk and egg white. But years of replantingforests and grasslands have restored oxygen into the air， and Tibet-ans now enjoy hard-boiled eggs every day.
