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  • 1 # 速速影片

    up and downna.上上下下;到處;來來去去;升降浮沉來回;來來往往;來來回回例句1.He looked at me up and down with his eyes wide open.他睜大眼睛上下打量著我。2.She critically stared at me up and down through her glasses.她透過眼鏡挑惕地上下打量我。3.Tell the children not to bounce up and down on the bed.告訴孩子們別在床上蹦跳。4.He paced up and down in the drawing room, extremely concerned over the result of the interview.他在客廳裡來回踱步,對面試結果極為憂慮。5.He was looking up and down the road as if he were expecting someone.他向大道上張望著,好像在等待著什麼人。

  • 中秋節和大豐收的關聯?
  • float的有效位數是六位,指的是小數點之後的六位還是包括小數點前的數總共六位?