There is considerable and justified concern that the United States is falling behind much of the rest of the developed world in these essential disciplines.
人们有合理正当的理由担心,美国在这些基本学科上落后于其他许多发达国家。
The porcelain offers great qualities similar to the bone china much such as considerable strength, glassiness, whiteness and translucence but can be made at a lower cost to the bone china.
这种瓷器在玻璃质,白度和半透明性质与骨瓷器相当差不多,但成本比骨瓷器低。
Although Manning Marable may not have succeeded in writing a definitive work, his considerable scholarship does remind us how much is elided by any tale of a pilgrim's progress.
尽管曼宁·马拉贝不可能成功地写出一篇有结论的著作,但是他博学多识也提醒我们,有多少事情被这位朝觐者的进步所省略。
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