0 physical or mental pain that a person or animal is feeling -- 疼痛；折磨；痛苦
The war will cause widespread human suffering. 戰爭會給很多人帶來苦難。
Now she is at peace and her suffering is over.
The idea is to kill the animal as quickly as possible without causing unnecessary suffering.
No report can convey the unspeakable suffering that this war has caused.
