常見例句雙語例句Doctors believe that heredity and chronic exposure to loud noises are the main factors that contribute to hearing loss.醫(yī)生們認(rèn)為遺傳因素和長期處于高分貝的嘈雜環(huán)境是導(dǎo)致失聰?shù)闹饕蛩亍?/li>Acetylene is a simple asphyxiant and anesthetic. Experiments have shown there to be no harmful effects from chronic exposure to acetylene at high concentrations.乙炔是簡單的窒息物和麻醉劑。實(shí)驗(yàn)顯示慢性接觸高濃度乙炔沒有有害影響。chinafanyi.comChronic exposure and action level;慢性照射和行動(dòng)水平；權(quán)威例句It is important to mention that this condition is not a burn, but just a skin condition that develops as a result of chronic exposure to moderate heat.FORBES: Some Like It HotIf you have a history of asthma or emphysema, (COPD) or other chronic lung disease, limit your exposure to the cold temperatures.FORBES: Important Cold Weather Safety and TipsDoses may be chronic or acute depending upon the duration of exposure.FORBES: Infographic: How Much Radiation Could You Survive? 返回 chronic exposure