barometer
n.气压计；晴雨表；显示变化的事物；（舆论等的）标记
网络解释.气压计；气压表；晴雨表；睛雨表
词形变化:
复数：barometers
派生词: barometric barometrical barometry
criterion
双语例句
1. 1 . Infant mortality is a highly sensitive barometer of socio - economic conditions.
婴儿死亡率能够充分反映社会经济状况.
来自《简明英汉词典》