不明确的

The effectiveness of Periston had been clearly established, but it was stored in the body for undesirably long periods.

Periston的成效已明确地建立起来，但在一段不必要的长时间内，它在被储存在身体中。

So there's a clear commercial reason for using unsaturated vegetable fats.

因此，有一个明确的使用不饱和植物油的商业理由。

If you do not specifically know you have a Voyager based machine

如果你不能明确的知道你的机器基于 Voyager 就不要选这个选项。

Are there parts of the city that are rapidly expanding but don't necessarily have a well-defined growth plan?

有城市的每个角落，都在迅速扩大，但不一定有一个明确的发展计划？

We do provide lots of reference code for each of these layers, and it isn't a completely black and white matter, but yes.

我们提供每一层的参考代码，当然也不是非常明确的代码。

It is impossible that the invading army did not confiscate cows - the only sin that was condemned explicitly in the Zoroastrian creed .

这是不可能的侵略军没有没收奶牛-唯一的罪过是明确谴责在拜火教信仰。

The adscription of the right for examination and approval of trade species is not definite, and the examination and approval was too time-consuming. We put forward some suggestions to improve the legal system, and to regulate and consummate the administrative system by adopting technical measures should.

鉴于野生动植物进出口审批存在物种管理权属不明确、审批过程太长等问题，提出加强法制建设并采取相应的技术措施加以规范和完善的具体建议。

The number of synonymous nucleotide substitutionper synonymous site and the number of nonsynonymous nucleotide substitution per nonsynonymous site of cytb gene among Clupeidae fishes were calculated.

但单系类群I(包括大西洋鲱、太平洋鲱、欧洲黍鲱)和单系类群Ⅱ(包括欧洲沙丁鱼、加州沙丁鱼、南美拟沙丁鱼、斑点盖纹沙丁鱼)之间的系统发育关系尚不明确，因为它们之间的支持率很低。

The intermediates were coupled respectively with derivatives of gallic acid to give polysubstituted diphenylmethane.

发现邻甲氧基苯甲酸甲酯中酯甲基可以被正丁基锂和仲丁基锂中烷基交换生成相应的酯，反应的机理不明确。

Risk factors of patients are hypertension (81.1%), hyperlipoidemia(68.4%), hyperglycosemia(54.4%), and the occurrence of cerebrovascular disease tends to transit to younger group of people.

脑血管病患者主要危险因素仍是高血压(81.1%)、高血脂(68.4%)、高血糖(54.4%)，中青年患者的发病还与不健康的生活方式和不良嗜好有明确关系。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！