It was not until 1500 BC, however, that the first hollow glass container was made by covering a sand core with a layer of molten glass.
然而，直到公元前 1500 年，第一个中空玻璃容器才通过在砂芯上覆盖一层熔融玻璃制成。
| 单词 | core sand |
| 释义 |
core sand
原声例句
栗子的阅读 It was not until 1500 BC, however, that the first hollow glass container was made by covering a sand core with a layer of molten glass. 然而，直到公元前 1500 年，第一个中空玻璃容器才通过在砂芯上覆盖一层熔融玻璃制成。 |
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