您要查找的是不是：
- He's mute on the subject of social system. 他对社会制度的问题保持沉默。
- Pupils who pass the test will be promoted to the next higher grade. 小学生只要考试及格就会升到高年级。
- He's not in the first grade as a musician. 他不是第一流的音乐家。
- He's a deaf mute and cannot tell anyone secret. 他是个聋哑人，不会把他们的秘密告诉任何人。
- The deaf and mute communicate by sign language. 聋哑人用手语沟通。
- Business is now on the up grade. 目前生意蒸蒸日上。
- The letter "e" in "mouse" is mute. “mouse”中的字母“e”不发音。
- Pupils with 90% or more are awarded Grade A. 满90分的学生评为甲等。
- Lacking the faculty of speech; mute. 丧失了说话能力的; 哑的
- The sixth grade saw an educational film yesterday. 六年级学生昨天看了一部教育片。
- A mute for various brass instruments. 减音器各种铜管乐器中的一种减音器
- He received a failing grade on the term paper. 他的期末报告不及格。
- Red and yellow grade into orange. 红与黄混合成橘黄。
- The twins will enter the fourth grade this fall. 这对双胞胎今年秋季将升到四年级。
- Their marriage is on the down grade. 他们的婚姻关系每况愈下。
- The trial flight has made the grade. 试飞成功。
- The naughty boy had to repeat the fifth grade. 这个顽皮的男孩不得不重读五年级。
- He ranks among the best pupils of his grade. 他是他们班级最好的学生之一。
- The prisoner sat mute, offering nothing in his own defence. 那个囚犯一声不吭地坐着，没说任何为自己辩护的话。
- A person who has achieved this grade. 特等射手取得这种等级的人
