不能肯定的

I wasn't sure if my face betrayed my shock, but I returned to gazing at

我不能肯定我的表情是否泄露了我的震惊。

There's only good reviews, but I can't be sure those are legit.

有唯一的好评论，但我不能肯定这些都是合法的。

I heard he's been transferred to another department as a marketing manager .

但我不能肯定你说的是对的，我听说他被调到别的公司做销售经理了。

People are not sure why they built this pyramid,but it must have been important.

现在人们不能肯定他们建造这一金字塔的原因，但在当时一定是很重要的。

Review the script and pay special attention to both their pronunciation and their unadulterated usage of English in daily life.

我想那是对的，不过我也不能肯定。4。你昨天在校园里遇到的那些人是英国人。

The earliest and reliable Castanopsis fossil records date back at least to Eocene, and subfamily Castaneoideae fossil records found from Paleocene, it is indicated that appearance of Castanopsis is not later than Paleocene . All fossil records of Fagaceae and Castanopsis report from the Northern Hemisphere and their main distribution regions are in the Northern Hemisphere . It can be concluded that the Northern Hemisphere is the center of origin of Fagaceae and Castanopsis . However, owing to the discrepancy between fossil data and results of modern botany research as well as scarcity of fossil data from key area, precise center of origin of Castanopsis cannot be inferred.

栲属在地质历史上有着比现在广泛的分布，最早、最可靠的栲属化石记录发现于始新世地层，栗亚科化石在古新世就有发现，化石记录表明栲属起源的时间不晚于古新世，所有的壳斗科及栲属的化石都发现于北半球，现代分布也主要在北半球，壳斗科及栲属起源于北半球可以确认，由于化石证据与现代植物学的研究结果有较大差异以及关键地区化石证据的不足，具体的起源地尚不能肯定。

The 9 specimens were not confimed to livae viable organisms of Chlamydia trachomatis. The debris of nonviable Chlamydia trachomatis DNA was exluded from urinogenital tract at about one month.

结论沙眼衣原体感染患者在服用抗生素后，PCR阳性不能肯定为有活性的沙眼衣原体存在，因其死亡的DNA片段可在体内存留1个月，只要有DNA片段存在，PCR检测均为阳性。

I have heard anodizing can be done using a car battery charger, but I have not tried this, so I am not sure what exactly the requirements are for the charger.

我听到阳极氧化可以使用汽车电池充电器，但是我还没有尝试的，所以我不能肯定，究竟要求的充电器。

Clinton's order not only fails to affirm the limited powers of the executive branch, it effectively revokes the 10th Amendment and arrogates to the President broad new powers tantamount to those of a totalitarian dictatorship.

克林顿的命令，不但不能肯定行政部门的权力有限，它有效青海省第十修正案竟然向总统广泛权力，无异于那些新极权专政。

But they were not sure if the virus existed in chimps in the wild.

但是他们不能肯定在野生的黑猩猩身上是否也存在这样的病毒。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。