又，如果蔬果没有经过清洗，表面残留的化学物质会刺激到肠胃。
Also, if you have not properly washed the fruits and vegetables, some of the residual chemicals on the surface can irritate the bowels.
氧气应用-可提供经过清洗和包装，适用于氧气或其他特殊应用的阀门。
Oxygen service - Valves can be provided cleaned and bagged for oxygen or other special services.
啤酒空瓶在灌装之前要经过清洗和检验这两道工序，以保证其符合生产标准。
Before empty beer bottle filled, it must pass clean and check these two working procedures to guarantee it conforms to the production standard.
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