鞋的作用是什么? 它们是保护脚的.What's use of shoes? They are the protection for feet.它们是保护脚的.They are the protection for feet.建筑工人需要穿坚固耐用的工作靴来保护脚.The construction workers need to wear heavy - duty work boots to protect their feet...
液体胶合剂会遮住两层之间的接缝.The liquid cement will cover the slit between the layers.所用的胶合剂必须对两种材料都适用.The cement used must be suitable for both materials.把胶合剂拿过来,我要粘东西.Would you pass me the adhesive? I want to stick something....