单词	She fell ill
释义	She fell ill. 她生病了。
随便看	natural chromosome aberration natural chronic keshan disease natural circuit natural circular frequence natural circular frequency natural circulate natural circulating natural circulating electrolyzer natural circulation natural-circulation natural circulation boiler natural circulation boiler reactor natural circulation evaporator natural-circulation evaporator natural-circulation heating natural circulation in reactor natural circulation kiln natural circulation line natural-circulation operation Natural circulation pressurized water reactor natural circulation reactor natural-circulation reactor natural circulation steam generator natural-circulation steam generator natural circulation system