1.He is good at masking his real character behind an assumed manner.

1.他善于用伪装的举止来掩饰其真正的性格。

2.It is taking hychroperoxides as masking agents, alumnium in titanium alloys was meascred with aluminon ammonium aurintri-carboxylate.

2.研究了以过氧为掩,用测定钛合金中的方法。

3.If the hair graying is inreversible, hair colorant is the main choice for the masking of hair color change.

3.在无法逆转头发变灰的情况下，着色是恢复头发颜色的主要方法。