如何使用 "competition" 造句

1. Competition is also a threat .
竞争也是一个威胁。
2. They also respond to competition .
他们同时也相互竞争。
3. So the competition is friendly ?
那么竞争是友好的?
4. But competition is hotting up .
但市场竞争很激烈。
5. Competition is stiff these days .
最近竞争越来越激烈。