3D打印技术发展迅速,许多专家建议把这项技术介绍给更多的中学生.
The 3﹣D printing is developing fast.Manyexperts suggestthat it should be to more middle school students.
People who often list things they are thankful for are happier and .(healthy)
Some complain that visitors are too much stress on the environment.(cause)
You can enjoy water sports,or lie on the beach.(simple)
The faces were a sight,covered with dust.(boy)
为了在晚会上不被误认为是他的孪生弟弟,凯文戴了一副眼镜
In order not to his twin brother,Kevin at the party.