Move children's swing sets and sand boxes away from the woodland edge and place them on a wood chip or mulch type foundation.

将孩子的秋千和沙箱从林地边缘移到木屑或护根类覆盖物的地面上。

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Their nests –containing up to 100 eggs –are being carefully packed with sand into Styrofoam boxes and shipped to protected beaches on the Atlantic coast.

每座龟巢中有上百枚龟蛋，救援人员将龟巢用沙子覆盖，小心存放在聚苯乙烯泡沫盒里，然后海运至受保护的大西洋海滩。

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Resin sand mould was adopted with precoated sand core. The upper and bottom half boxes used horizontal pouring design with box middle line as parting face.

采用树脂砂砂型、覆膜砂砂芯，上、下两个箱体均采用平做平浇的工艺方案，并选取箱体中线为分型面。

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The loss of the springs brought with it a loss of the natural filtration of soil and sand, however, so the Maya built their own primitive filtration systems, forcing their rainwater runoff through boxes of sand, the researchers found.

MSN: Sustainable tech saw the ancient Maya through drought

More sophisticated traders carried small wooden boxes filled will sand--the portable calculator of the day.

FORBES: No. 2 The Abacus