Conclusion Along with age child's refraction condition is in change, therefore the tracing observation is needed.
结论儿童的屈光状态随年龄在不断地变化，故需追踪观察。
Therefore, close observation of the fetal heart rate tracing is necessary during labor.
因此产程中应严密观察胎心变化。
Therefore, close observation of the fetal heart rate tracing is necessary during labor.
因此产程中应严密观察胎心变化。
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