bacteria bed

常见例句

• The brook warbled over its rocky bed.
  小谿潺潺流過多石的河牀。
• A film of mucus and bacteria on a tooth surface.
  齒菌斑牙齒表麪一層粘液和細菌的膜
• She rushed off to work leaving her bed unmade.
  她匆忙去上班連牀都沒鋪好。
• Bacteria are too small to see with the naked eye.
  細菌太小，肉眼看不見。
• A mosquito netting completely surrounds our bed.
  一頂蚊帳把我們的牀完全圍住了。
• Many diseases are caused by bacteria.
  許多疾病是由細菌引起的。
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