Sight test are free to children.

视力检查对儿童免费。

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You must stay quiet and out of sight during the test.

在整个测试过程中你必须保持安静并且视而不见。

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Please sit in front of the machine so I can test your eye sight.

请你坐在仪器前面，以便检查你的视力。

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Please sit in front of the machine so I can test your eye sight.

请你坐在仪器前面，以便检查你的视力。

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