phlegm
n[U]
1 thick semi-liquid substance which forms in the air passages, esp when one has a cold, and which can be removed by coughing 痰.
2 (dated or fml 舊或文) quality of being slow to act or react, or to show feeling; calmness 遲鈍; 冷漠; 冷靜
show considerable phlegm in facing the crisis 面對危機表現得相當冷靜.