Well, you just take a closed curve in the plane.
只需在区域中取一条封闭曲线。
Well, the shooting gallery is now closed; the experimental results are coming in.
现在，射击场已经关门；射击的结果即将出现。
Compact structure, well to be opened and closed, lower in height, easy maintenance.
结构紧凑，启闭性好、高度小、维修方便。
Store closed containers in a cool, dry, well-ventilated area. Avoid exposure to direct sunlight.
密封储存于阴凉、干燥、通风良好环境中，避免阳光直射。
Storage: Kept in a well-closed, light-resistant, dry and cool place.
贮存：避光、干燥阴凉处封闭贮存。
Storage: Kept in a well-closed, light-resistant, dry and cool place.
贮存：避光、干燥阴凉处封闭贮存。
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