學測原句

• 111 學測｜閱讀測驗 第 1 篇｜第 4 段
  Natural materials such as clay, shells, and ivory were used before trading with the Europeans in the 19th century.
  在 19 世紀與歐洲人通商之前，使用的是黏土、貝殼和象牙等天然材料。
  • natural materials：「天然材料」
  • before trading with…：before + V-ing，「在與…交易之前」