barometer

1. N-COUNT A barometer is an instrument that measures air pressure and shows when the weather is changing. 氣壓計

A man in camp took a barometer reading at half-hour intervals. 營地裡的一個人每半小時看一次氣壓計。

2. N-COUNT If something is a barometer of a particular situation, it indicates how things are changing or how things are likely to develop. 發展變化的指示計

In past presidential elections, Missouri has been a barometer of the rest of the country. 在過去的縂統大選中，密囌裡州一直是該國其餘各州的晴雨表。