维生素B族4组分 Four B-group vitamins

分为4组 divided into four group ; assigned to groups

分成4组 divided randomly into groups ; allocated into groups

随机分为4组 divided into groups at random

随机分成4组 randomly divided into four groups

金属蛋白酶4组织抑制剂 Tissue inhibitor of metalloproteinases-4

霹雳小组4含资料片 Swat

疯狂4人组 Krazzy ; Krazzy 4

群组1至4控制 Group 1 to 4 Controls