knocking

常见例句

用作名詞 (n.)

• A war came knocking on your door.
  一個戰爭受到在你的門上爆震音的影響。

(vbl.)

• They found that knocking out the gene in fetal mice whose hematopoietic systems had already formed caused hematopoietic stem cells to disappear.
  他們發現擊昏已經形成造血系統的胚胎小鼠的基因會引起造血乾細胞的消失。
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