单词:piston ring lock
单词:piston ring lock 相关文章
Practice: listen and repeat Whos it? Is me, Jenny Is some one at the door? Can somebody get the door? Ill get it. Practice: listen and repeat Who is it? Is me, Jenny Ill get it Is Jon home? What brings you here? Dialog: Who is it? Its me, jenny Oh,
Read the following situation and act out the dialogue. Before Bassanio and Portia got married, Portia gave him a ring and made him promise to keep it all his life. Losing it, selling it or giving it away would be the end of her love for him. After t
Ocean Floor Reveals Past Climate Changes Time capsule Lamont research professor Maureen Raymo, the director of the Core Repository, slides open a long, narrow drawer from the cabinet. Like thousands of others here, the drawer contains a long, thin cy
A group of senior students from Zhejiang University have successfully developed an air hand-washing device. 浙江大学的一队大四学生成功研制出了空气洗手装置。 The device utilizes an infrared ray induction system, which detects t