trend 指事物发展总的方向、倾向或趋势。
tendency 指固有或习得的倾向性，强调没有外来的影响或干扰。
current 指向某一方面发展或在确趋向中行动。
参考例句
1. What is your occupation tendency?
你的职业倾向是什么?
2. I have a tendency to rust.
噢。-我有一种生锈的趋势。
3. The tendency for a system by resisting change to remain in a state of equilibrium.
生态系统倾向以抗拒外来变化为原则而维持在一个平衡状态。
参考例句
1.N-COUNT A tendency is a worrying or unpleasant habit or action that keeps occurring. 倾向
例：...the governments tendency to secrecy in recent years.
近年来政府的保密倾向。
2.N-COUNT A tendency is a part of your character that makes you often behave in an unpleasant or worrying way. 倾向
例：He is spoiled, arrogant and has a tendency toward snobbery.
他被宠坏了，很傲慢，而且有势利倾向。
常见用法
用作名词
There is a tendency towards regional cooperation.
有一种地区性合作的趋势。
There is a growing tendency for people to work at home instead of in offices.
人们在家里而不是在办公室里工作的趋势日益增长。
Today there is a tendency for people to opt out of social activity.
现在,越来越多的人倾向于不参加社会活动。
They tried to stop the tendency of inflation.
他们设法阻止住了通货膨胀的势头。
She has artistic tendencies.
她有艺术气质。
She has a strong natural tendency towards caution.
她天生喜欢小心谨慎。