2 sentences for 任意 (rèn​yì — at will)

1. 我们不能在公园里任意采摘花朵。

   wǒ​men bù néng zài gōng​yuán lǐ rèn​yì cǎi​zhāi huā​duǒ.

   We cannot pick flowers at will in the park.

   Source: Dong Chinese Dictionary

2. 他总觉得自己有权任意驱使别人。

   tā zǒng jué​de zì​jǐ yǒu quán rèn​yì qū​shǐ bié​ren.

   He always feels he has the right to boss people around at will.

   Source: Dong Chinese Dictionary