英语词汇be present in怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

1
Central heating was present in every upper-middle-class home by the second half of the 19th century.
到19世纪下半叶，中央供暖系统已出现在每个中上层家庭里。
2
Central heating was present in every upper-middle class home by the second half of the 19th century.
到19世纪下半叶，中上层阶级家庭都用上了中央供暖。
3
we realized that all of the business logic was present in the servlets.
来深入探索原因的时候，我们意识到所有的业务逻辑都放在了这些 servlet中。

单词	be present in
释义	be present in 美/ bi ?preznt ?n / 简明释义存在于：指某个事物或现象存在于某个地方、某个时间或某个群体中。双语例句 1 Central heating was present in every upper-middle-class home by the second half of the 19th century. 到19世纪下半叶，中央供暖系统已出现在每个中上层家庭里。 2 Central heating was present in every upper-middle class home by the second half of the 19th century. 到19世纪下半叶，中上层阶级家庭都用上了中央供暖。 3 we realized that all of the business logic was present in the servlets. 来深入探索原因的时候，我们意识到所有的业务逻辑都放在了这些 servlet中。
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