如何使用 "convenance" 造句

1. Do you know the convenance ?
你们懂礼仪吗?
2. I think if I convenance confined a brace of times , I 'll get the adhere of it .
我想如果我多训练几回发球,我就会魔到秘诀了。
3. International convenance , art , food and life style experiences in a combinated environment of chinese and western cultures .
中西文化结合,体验国际礼仪、国际艺术、国际饮食、国际生活.