They could create hard-wearing clothing, strengthen our buildings, help repair our broken bones, or they may pick on someone their own size by picking fights with the viruses that cause winter colds.
This one is characterized by extremely small size, recent kitting-up, rather good repair and working lighting.
这个避难所是典型的小型避难所，最近才公布出来，进行了良好的修复并有着很好的工作照明。
3
Mechanical seal repair process more complicated, after assembly to ensure no leakage of the mechanical seal, mechanical seal technology essential check size.