n.[植]苦艾；苦恼
Beside a bush of gray wormwood, the footprints of an animal were clearly visible. 一丛灰白色的苦艾旁，沙地上留有一行清晰的野兽走过的痕迹。
Your words must be gall and wormwood to him. 你的话在他听来一定逆耳。
