例句：
Aspirin is a mild analgesic.
阿司匹林是药性平和的'止痛药。
Lipotropin is a potent analgesic.
促脂素是一种有效的镇痛药。
The closest living analogue might be a sponge.
现存的最接近的类似物或许是海绵。
He tried to analyse his feelings.
他试图分析自己的感情。
