guard action

• 保护作用

guard action的用法和样例：

例句

1. All these rise to protect action to dental enamel.
   所有这些都对牙齿的珐琅质起到保护作用。
2. Conclusion Tiopronin might have better protective action for liver during hepatocarcinoma interventional therapy.
   结论凯西莱对肝癌介入治疗后肝功有较好的保护作用。