求翻译：１８３３年，英国通过废奴法案，宣布在所有殖民地内逐步废除奴隶制。此后，其他一些国家纷纷效仿，例如美国、俄国、法国、中国。奴隶制由此逐步遭到废除是什么意思？

In 1833, the British abolitionist bill passed, announced the gradual abolition of slavery in all the colonies. Since then, other countries followed suit, such as the United States, Russia, France and China. Thus the gradual abolition of slavery was

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In 1833, England through the waste slave bill, announced abolishes the slavery gradually in all colonies.Hereafter, other some countries imitate in abundance, for example US, Russia, France, China.The slavery gradually encounters from this abolishes

In 1833, the United Kingdom through the Slavery Abolition Act, announced the gradual abolition of slavery in all colonies. Since then, a number of other countries to follow, such as the United States, Russia, France and China. Forward from slavery was abolished

In 1833, the United Kingdom through the Slavery Abolition Act, announced the gradual abolition of slavery in all colonies. Since then, a number of other countries to follow, such as the United States, Russia, France and China. Forward from slavery was abolished