If nitrite in chemical fertilizer enters rivers, under certain conditions, nitrite produces nitrosamine, which is an ...

Uncontrollable anger surged up when he saw what had been done to his painting., 当他看见自己的画被糟踏了时，难以克制的愤怒涌上心头。

Since junior high school years, he has been obsessed with poetry, a student of science and engineering, but to become a poet ...