你绝不能使用二比一的比例。
这些药品相对容易获得，也比较容易让人接受，但若是慢性疼痛就绝不能使用。
The drugs are relatively easy to get and tempting to take, but you should never use them for chronic pain.
位于省会城市的馈线线路(设备)绝不能使用电压调节装置来解决低电压问题。
Feeders located in capital cities must not use voltage Regulators to solve undervoltage problems.
绝不能使用苛性溶液或金属刷清除活塞表面的积碳和漆膜。因为这样会损坏活塞裙部的粗糙度。
Piston cleaning. Remove carbon and varnish from piston surfaces. Do not use a caustic cleaning solution or a wire Brush. These could damage the piston-skirt finish.
绝不能使用苛性溶液或金属刷清除活塞表面的积碳和漆膜。因为这样会损坏活塞裙部的粗糙度。
Piston cleaning. Remove carbon and varnish from piston surfaces. Do not use a caustic cleaning solution or a wire Brush. These could damage the piston-skirt finish.
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