However, although they look dangerous because of their wide mouths and sharp teeth, all but two or three kinds are harmless to humans.
尽管它们有宽大的嘴巴和锋利的牙齿，看上去很危险，然而除了两三种外，其余的对人类并没有危险。
"There are drug treatments that can reduce the intra-ocular pressure, but that means life-long treatment involving two or three kinds of eye drops three times a day," says Prof.
“药物治疗可以降低眼压，但这意味着终身治疗，每天三次滴两或三种眼药，”Assia教授说。
Universal bag printing standard size three open, four open four-color or three. Each kind is divided into two kinds of positive degree or degree.
通用的手提袋印刷标准尺寸分三开，四开或对开三种。每种又分为正度或大度两种。
Try all kinds of sports until you find one, two or even three that are right for you.
直至你找到一项，两项，或者甚至三项你觉得对你来说不错的之前，尝试所有种类的运动。
Application: Smear suitable quantity on your face, move circularly with fingers for two or three minutes, wash up with face tissues or water. It suits for all kinds skins.
使用方法：涂于面部，手指做圆形推动，二、三分钟后，用面巾纸摸干净或清水洗涤。适用各种皮肤。
Three kinds of asphalts, one in the original and two others modified by antistripping or chemical agents, are examined by assessment of the adhesiveness and residual performance.
通过对基质沥青、抗剥落剂改性沥青和化学改性沥青粘附性能和残余粘附稳定度的分析，比较了3种沥青在粘附性方面的不同特征。
The results indicated that: The growth of H. pluvialis was improved significantly by adding of Vitamin-B_1, Vitamin-B_(12) and Vitamin-H respectively, together two kinds or together three kinds.
结果表明：单独添加维生素B_1、B_（12）和H均对雨生红球藻游动细胞的生长有明显的促进作用。
The results indicated that: The growth of H. pluvialis was improved significantly by adding of Vitamin-B_1, Vitamin-B_(12) and Vitamin-H respectively, together two kinds or together three kinds.
结果表明：单独添加维生素B_1、B_（12）和H均对雨生红球藻游动细胞的生长有明显的促进作用。
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