once
conj.一旦…就…
Once you begin, you must continue.
一旦開了頭, 你就應(yīng)當(dāng)繼續(xù)下去.
___ you know how the machine works,you will not have trouble operating it.在空格中填入適當(dāng)?shù)倪B接詞
___ you know how the machine works,you will not have trouble operating it.在空格中填入適當(dāng)?shù)倪B接詞
答案是once
請幫我分析一下
答案是once
請幫我分析一下
英語人氣：479 ℃時間：2020-06-29 02:06:22
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