meaning for 对照 duìzhào:

  • - to contrast
  • - to compare
  • - to place side by side for comparison (as parallel texts)
  • - to check

duì
yīzǔ一组
shǐyòng使用
xīnyào新药
duì
lìng
yīzǔ一组
shǐyòng使用
jiù
yào
yǐzī以资
duìzhào对照

One group was treated with the new drug, and a second group was treated with the old one as a control.