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- However,more virus infection grade one plants handlower mottling seed ratio than grade three plants had. 但在褐斑率低的品种中，一级病害的发生率明显多于三级；
- 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。
- My right eardrum have become infect. 我的右耳鼓已经感染了。
- He's not in the first grade as a musician. 他不是第一流的音乐家。
- Business is now on the up grade. 目前生意蒸蒸日上。
- Pupils with 90% or more are awarded Grade A. 满90分的学生评为甲等。
- Antibiotic can be used against infection. 抗菌素可以用来防止感染。
- The infection is at last responding to medication. 药物治疗终于开始对感染显出效果。
- This infection is transmitted by mosquitoes. 这种传染病是由蚊子传染的。
- The sixth grade saw an educational film yesterday. 六年级学生昨天看了一部教育片。
- He received a failing grade on the term paper. 他的期末报告不及格。
- Her cheerful spirits and bubble laughter infect the whole class. 她那快乐的情绪和爽朗的笑声感染了全班。
- 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。
- Fever may be indicative of an infection. 发烧可能表明受了感染。
- The trial flight has made the grade. 试飞成功。
- Are you sure there is no danger of infection now? 你敢不敢肯定现在已经没有传染的危险了?
- The naughty boy had to repeat the fifth grade. 这个顽皮的男孩不得不重读五年级。
- Poor health predisposes to infection. 健康状况不佳易受感染。
