至今仍

Its origin is still a myst

它的起源至今仍是个谜。

Although the regulation of several Bcl-2 family molecules, including Puma, Noxa, Bax, and Bid, by p53 has been studied intensively, the interplay between Bad (Bcl-2 antagonist of cell death) and p53 has not yet been reported thus far.

尽管Bcl-2家族中的许多分子，例如Puma，Noxa，Bax和Bid，都可以被p53转录调控，这些已经被报道并且研究的很透彻，但是Bad与p53之间的关系至今仍没有被报道和研究。

When a supplica is affected by obreption or subreption it becomes necessary to ask for a so-called "reformatory decree" in case the favour asked has not yet been granted by the Curia, or for the letters known as "Perinde ac valere" if the favour has already been granted.

当一个supplica是受影响 obreption或subreption成为必要请一个所谓的&感化令&的情况下，反对者要求至今仍未获准，由教廷，或为英文字母被称为& perinde交流valere &如果赞成，已是理所当然的。

However, the key immunogens of avian Pasteurella multocida have not been illustrated well enough to provide completely protection, although certain cell components such as proteins and carbohydrates were known being able to provide partially protections.

有鉴於引起家禽霍乱的巴斯德杆菌，其关键性抗原至今仍未确定，仅知道一些如菌体蛋白及醣类作为抗原经免疫后可提供部分保护力。

Selective oxidation of naphthalene to phthalic anhydride is quite an old but successful process and used in industry up to the present.

由萘选择性氧化制邻苯二甲酸酐是一个相当老和成熟的生产工艺，至今仍在应用，也正因为如此，对该反应所用催化剂及其物理化学性质和物态结构，特别是在反应状态下的各种特征反而研究得不很充分，或比较零散。

It is impossible to know today just what our Stone Age ancestors knew about plants, but from what we can observe of preindustrial societies that still exist a detailed learning of plants and their properties must be extremely ancient.

我们今天不可能知道新石器时代的祖先们对植物到底了解多少，但我们在至今仍存在的前工业化社会观察到：人类对植物及其特性的详细了解应该是非常古老的。

It is impossible to know today just what our Stone Age ancestors knew about plants, but from what we can obse rve of preindustrial societies that still exist a detailed learning of plants and their properties must be extremely ancie nt.

我们今天不可能知道新石器时代的祖先们对植物到底了解多少，但我们在至今仍存在的前工业化社会观察到：人类对植物及其特性的详细了解应该是非常古老的。

The textual research and analysis of the declassified but largely neglected letters between them tend to disprove the still popular viewpoint that Acheson attempted to reconciliate with Communist China in 1949-1950, but was unsuccessful owing to the objections from the American press and Congress.

考证和分析表明，已解密多年但一直被忽视的这些信件很有助于否定至今仍流行的一种观点，即艾奇逊在 1 94 9至 1 950年试图与中国共产党和解，但主要由于美国舆论和国会反对而无法如愿。

As the VC structure per se is still not a clear-cut category, involving multiple heterogeneous elements, it has been limited in this paper to only the two patterns of the "verb + resultative complement" structure, and of the VC structure with If.

考虑到述补结构至今仍是一个内涵不是十分明确的范畴，涉及的内容多而且复杂，因此本文将讨论的对象主要限定在不带&得&的述补结构即动结式和带&得&的述补结构范围之内。

There are several kinds of crashers being used in industry .such as jaw crusher revolvement crusher,roller crusher ,punch crusher,prind crusher .Jaw crusher has many advantages,which other crushers can not instead of .Such as simple structure, safety work ,make easy,maintain easy and so on.The Jaw crusher is widly used in industries.

鄂式破碎机有很多的优点，例如：具有结构简单、工作可靠、制造容易、维修方便等其他破碎机无法替代的优点，至今仍广泛应用于工业各部门，而且我国生产的破碎机还远销其它国家。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。