set the trend的用法和樣例：
例句
- Somebody will have to break the ice.
總得有人開個頭。 - But the very hairs of your head are all numbered.
意思系咪即系成個頭的毛毛都包括在內？ - We plan to be in the forefront of that.
我們準備在這方面帶個頭。 - Therefore,we say it would be better for us old comrades to take an enlightened attitude and set an example in this respect.
所以我們說，老同志帶個頭，開明一點好。
