The grade 4B students are finishing up deserts this week and will likely move forward into unit 6 next week.
四年级B班的同学们本周完成了沙漠的学习，下周有可能会开始第六单元的学习。
The electric machine impels the injection unit to move forward with spring and touches the spout and the model.
电动机通过弹簧使注射单元前进，使喷嘴与模具抵接。
The electric machine impels the injection unit to move forward with spring and touches the spout and the model.
电动机通过弹簧使注射单元前进，使喷嘴与模具抵接。
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