precipitated
 沈澱碳酸鋇
 Pre·cip·i·tate v. t. [imp. & p. p. Precipitated p. pr. & vb. n. Precipitating.]
 1. To throw headlong; to cast down from a precipice or height.
    She and her horse had been precipitated to the pebbled region of the river.   --W. Irving.
 2. To urge or press on with eager haste or violence; to cause to happen, or come to a crisis, suddenly or too soon; as, precipitate a journey, or a conflict.
    Back to his sight precipitates her steps.   --Glover.
    If they be daring, it may precipitate their designs, and prove dangerous.   --Bacon.
 3. Chem. To separate from a solution, or other medium, in the form of a precipitate; as, water precipitates camphor when in solution with alcohol.
    The light vapor of the preceding evening had been precipitated by the cold.   --W. Irving.