铬掩模的使用寿命比乳效掩模的长10~100倍.Chromium masks last 1 o to 100 times longer than the emulsion masks.铬掩模的使用寿命比乳效掩模的长10~00倍.Chromium masks last 1 o to 100 times longer than the emulsion masks....
take the contagion得传染病They have been reluctant to admit AIDS patients, in part because of unfounded fears of contagion...他们一直不愿接纳艾滋病患者，部分原因是无来由地害怕被接触传染。They have been reluctant to admit AIDS patients, in part because of ...