牙斑如果不清除就会导致牙齿蛀蚀和牙龈疾病。When not removed, plaque causes tooth decay and gum disease.牙齿和牙龈之间会滋生牙斑。Deposits of plaque build up between the tooth and the gum.需刷牙以去除牙斑.It is necessary to remove plaque by brushing one's tee...
Pigeons fluttered in and out, cooing gently.鸽子们低声咕咕地叫着，扑扇着翅膀飞进飞出。Flags fluttered in the breeze.旗帜在微风中飘扬。Imes concluded from her fluttered look that she had spent the money.艾姆斯从她慌张的眼神推断出她花光了钱....
Large cysts can cause Backaches and a dragging sensation.体积较大的囊肿可引起背痛及牵扯感.Worry can bring a lot of diseasessuch as tension headaches and backaches.忧虑能产生很多疾病,如神经紧张性头痛、腰酸背痛等.In August 1982, Julian started complaining of ba...