He could talk good sense and airy nonsense at discretion.

他能随意讲述意味深长的警句和毫无意义的空谈。

All sceneries and natural environment in the Scenic Spot shall not be destroyed or changed at discretion by any unit or individual.

风景区内的一切景物和自然环境，任何单位和个人不得破坏和随意改变。

A touring bicycle was developed, five seats distributed equality on a circle, several person combinations at discretion can also ride the bicycle.

研制的观光脚踏车五个座位均匀分布在圆周上，任意几人组合都可以乘骑。

In addition, deep excavation can cause considerable tension force in the pile, which means that the reinforcing steel bars in the lower part of the pile should not be reduced at discretion.

此外，超深开挖可在桩身中产生较大的拉力，桩身中下部钢筋不能随意减少。

We may vary the limit at our discretion and will notify you of any change.

我们可酌情决定更改限制，并会将任何变更通知你。