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1.
But many people still do not know about sealants. About one-third of children in the United States have sealants on their teeth.
但很多人至今尚不知道保护胶。在美国大约三分之一的孩子使用了保护胶。
blog.sina.com.cn
2.
As his lawyer, he said he had been unable to do so thus far.
但他表示，作为何鸿燊的律师，他至今尚无法看到这些文件。
www.ftchinese.com
3.
Keratoconjunctivitise sicca (KCS) is one of the most common ocular surface disorders, whose pathogenesis is not so far clear.
干眼症是眼科最常见的眼表疾病之一，其发病因素至今尚不明确。
kns50.chkd.cnki.net
4.
the reason for her summons was as yet unexplained.
她召见的原因至今尚不清楚。
www3.060s.com
5.
Up to now, there is no fuel or chemical reaction known that could produce the sun's heat and light.
至今，尚无已知的燃料或化学反应能产生象太阳那样的光和热。
wenku.baidu.com
6.
The effect of different industries on the depth and breadth of yet cannot accurately but is no doubt that the impact has been.
其对各个行业影响的深度和广度至今尚不能准确评价，但影响已经是毫无疑问的。
us.zph981011.xyz
7.
Whether this accelerated early growth was due only to penetration of the seed coat, or was a more complex phenomenon, is still unclear.
早期的加速生长是由于种皮被穿透，还是一种更复杂的现象，至今尚不清楚。
www.ecocn.org
8.
However, the characteristics of isolated atlas fractures under pure axial loading at different speeds has not been reported so far.
然而，在不同速度下处于纯轴负荷下独立寰椎骨折至今尚无报道。
adoop.cn
9.
It appears that the little trouble was caused by a woman , whose name has not been ascertained .
看来这件小小的麻烦事是由一个至今尚不知姓名的女人引起的。
www.hotdic.com
10.
MDS treatment difficult, some patients can be converted into leukemia, so far there is no ideal method of prevention.
MDS治疗难度高，部分患者可转化为白血病，至今尚无理想的防治方法。
www.fabiao.net