No one drug will suit or work for everyone and sometimes several may have to be tried.
没有任何一种药会对每个人都适用或有效，有时得试好几种。
These structures are called Passage Graves, because the inner chamber, sometimes several chambers in fact, could only be entered from the outside through a narrow passageway.
这些结构被称为通道式坟墓，因为这里的内室，有时实际上是几个房间，都只能从外面通过一个狭窄的通道进入。
The markets are spread throughout the city, covering streets, whole city blocks and sometimes several building levels.
交易市场同样遍及全城，分布在街道、整条街区或者甚至是建筑物的几层。
This cookie or header is then passed onto that system (and sometimes several other systems), and the user is no longer prompted for authentication.
然后将此cookie和header传递到将要登录的系统中(有时是其他几个系统)，系统不会再提示用户进行身份验证。
During the sacrificial ritual, sometimes one ancestor was offered to, and sometimes several ancestors together received cult.
在祭祀活动中，有时祭祀一位祖先，有时几位祖先一起祭奠。
Thus one often sees a short passagee of a few words of classical Chinese "translated" into a much, much longer passage of vernacular Chinese, sometimes several paragraphs long.
这样，很多时短短的一句文言文，不过几个字，“翻译”出来的白话文就很长很长，甚至几段长。
Sometimes just a half mile off shore and sometimes several miles out into the ocean I'll paddle by myself or with a friend and fund these magnificent creatures swimming, sleeping, playing.
有时离岸仅半英里远，有时又数英里远，我独自驾乘我的小船，或者带上一位朋友，静静地观察这些神奇的生命游泳、睡觉和嬉戏。
Sometimes several clusters of white clouds drift across the blue sky.
蔚蓝色的天空中，时而飘过几朵白云。
Sometimes, several endocrine cells were found on one glandular tube.
有时可见一个腺管上有多个内分泌细胞。
Sometimes, several endocrine cells were found on one glandular tube.
有时可见一个腺管上有多个内分泌细胞。
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