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- sand sieve grading 砂筛分级
- We can separate the stones out with a sieve. 我们可以用一个筛子把石头分离出来。
- Ouch! The sand is so hot! I can burn my feet. 哎哟！沙子这么烫！会烫伤脚的。
- 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。
- The sand blew into the food and made it gritty. 砂吹进食物中，里边尽是砂子。
- She drained the water out through a sieve. 她用漏杓把水控出去。
- The children were playing in the sand pit. 孩子们在沙坑中玩耍。
- The tractor has make deep furrow in the loose sand. 曳引机在松软的沙土上留下了深深的车辙。
- He's not in the first grade as a musician. 他不是第一流的音乐家。
- The sun blazed down on the sand. 阳光强烈地晒在沙滩上。
- His company was built on the sand. 他的公司根基不稳固。
- 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。
- The river has scour out a passage in the sand. 这条河在沙土中冲出一条水道。
- The boat grounded on a sand bank. 船只搁浅在沙洲上。
- The kid dug a tunnel in the sand. 小孩在沙堆里挖了一个地道。
- The sixth grade saw an educational film yesterday. 六年级学生昨天看了一部教育片。
- It fell onto the wet sand, then sank (in). 那个东西掉在潮湿的沙子上，然後沉了下去。
- He received a failing grade on the term paper. 他的期末报告不及格。
- I don't remember her name. I have a head like a sieve. 我忘记了她的名字，我的脑壳像筛子，记性太坏。
