More N2 vocabulary

• 単数たんすうsingular (number)
• 追い掛けるおいかけるto chase or run after someone, to run down, to pursue
• いっていらっしゃいhave a good day (variant)
• 通り掛かるとおりかかるto happen to pass by
• 正方形せいほうけいsquare
• 輸血ゆけつblood transfusion