同根派生 英汉例句Oolong suppresses dental plaque and helps prevent cavities.乌龙能抑制牙菌斑及帮助预防蛀牙。The outcome is a circular clearing, a plaque, in the lawn of confluent bacterial growth.其结果是在细菌化合生长的菌坪中形成一个环状清除区，亦即溶菌斑。