Don't waste your breath trying to persuade them, they'll never listen.
别白费口舌规劝他们,他们不会听你的话。
I'm not accustomed to that kind of social situation.
我不太习惯那种社交场合。
There are even stories of half-trained elephant calves who have refused to feed and pined to death when by some unavoidable circumstance they have been deprived of their own trainer.