These factors must be balanced by the selection of diamond grade and concentration that will provide the operator with optimum performance at a suitable cost.
这些因素必须同时顾及挑选钻石分级及浓度，将提供最佳的营表现在一个适当费用。
2
Heavy. In addition, balanced nutrition intake, health massage, high grade nutrition cream category is the effective method to prevent the bags under the eyes.
重。另外，均衡的营养摄入，保健按摩，优质的营养霜类都是防止眼袋的有效方。
3
Fairness does not have to mean leniency. It simply means to grade your students on a balanced scale.