refractory例句
Silicate minerals are characteristically
refractory and difficult to break down.
硅酸盐矿物的特点是耐熔和难以分离.
Reflux leads to recurrent or
refractory aspiration pneumonia.
反流可引起复发的难治的吸入性肺炎.
Successive bouts of heart failure are apt to become more
refractory to treatment.
连续发作的心力衰竭可能变得难于治疗.