70107—the houses at capilco and cuexcomate were so small tha

70107—the houses at capilco and cuexcomate were so small that most domestic activity probably took place in the patio outside,which was kept clear of debris.4666
想问：
1—which was kept clear of debris：怎么翻译?特别是keep 保持碎片干净?
which was kept clear of debris：
clear：adj.
1.晴朗的,清澈的2.无愧的,清白的3.清楚的,明白的4.畅通的,无阻的5.明亮的；明净的，透明的6.(颜色)纯净的，纯色的7.洁白无瑕的，无污点的，白皙的8.清晰的，条理分明的9.(声音)嘹亮的，清脆的；无杂音的10.明确的，肯定的，不含糊的
kept clear of debris：这里应该是被保持碎片的无阻的 即：（保持着）畅通无阻。
翻译：这里保持碎片的无阻的（保持着）畅通无阻。