去年冬天，祖母忘了把屋外的吊兰拿进来。
Last winter Grandmother left her spider plant outdoors and forgot about it.
吊兰是业已发现最能有效去除甲醛的植物之一。
Spider plants are among those that were found to be most effective in removing formaldehyde.
吊兰是业已发现最能有效去除甲醛的植物之一。
Spider plants are among those that were found to be most effective in removing formaldehyde.
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