每隔的英文：
at intervals of
every (so often)

参考例句：

Take his vital signs at regular intervals.
每隔一定时间检查他的生命体征。

This capsule is to be taken every four hours.
这种胶囊每隔四小时服一次。

He visits his grandpapa every two weeks.
他每隔一周就去探望他祖父一次。

The grand Regency terraces of Brighton need painting every other year as the sea eats away at the stucco.
因为大海蚕食了那些灰泥，所以布莱顿的丽晶梯田每隔一年就要重新着色。

Still it appeared as though they were stationed at equal distances from one another, like sentinels
可是，他似乎觉得每隔一段的距离就站着一个人，象哨兵似的。

In the study, half of 22,000 physicians were given an aspirin every other day while the other half took a placebo.
在该项研究所涉及到的22，000名医生中，有一半的医生每隔一天服用一片阿斯匹林，另一半则服用安慰剂。

At two-minute intervals,ie once every two minutes
每隔两分钟.

every third seat;every two hours.
每隔三个座位;每隔两个小时

The roses bloom every few days.
玫瑰每隔几天开花。

Meetings held at half-yearly `intervals
每隔半年举行一次的会议.

intervals是什么意思：
n. 间隔；间距；幕间休息；区间

fundamental interval
基本差距

It rained at intervals.
雨时下时停。

There was a long interval of silence.
中间有很长时间的沉默。

every是什么意思：
det. 每一，每个；每隔，每；每…之中；充足的
adj. 每一的，每个的；所有的

Not every server in every restaurant can be relied upon.
不是所有的饭店服务员都可以信赖。

To triumph in every battle and succeed in every invasion
战胜攻取

His every act and every move are natural and unrestrained.
他的举手投足潇洒自然。

often是什么意思：
adv. 时常，常常；往往，通常

They often gossiped.
They often gossiped.

Often the good suffer, and often the wicked prosper.
好人总是受气遭殃，坏人往往青云直上。

She often keeps a diary.
她常记日记。