不定的

A gust of wind blew the flickering candle out.

阵风把闪烁不定的熄了。

The heavy rain might settle the changeable weather.

这场大雨也许能使变幻不定的天气稳定下来。

He has an incalculable disposition.

他有种捉摸不定的脾气。

Modal verbs generally take the bare infinitive.

情态动词通常用不带to 的不定式。

In dealing with that unpredictable man, you simply cannot follow a prearranged plan, you have to play it by ear.

和那个捉摸不定的人打交道, 你简直无法按预定计划事, 只好随机应变。

It's difficult to find a window cleaner who will call regularly—they all seem to be here today and gone tomorrow.

要找个能定期上门来擦窗户的人很难——他们似乎都是些踪不定的人。

He accused me of being a tax-and-spend liberal, a Jimmy Carter clone, and a waffler who couldn't make up his mind.

他指责我是个只知道增加税收和开支的自由派，是第二个吉米.卡特，墙，个举棋不定的人。

Trees of the family Dipterocarpaceae dominate the canopy and emergent layers of the hyper-diverse, aseasonal, humid lowland tropical forests of Southeast Asia.

以龙脑香科植物为主的东南亚热带雨林有非常特别的现象，那就是不定期的大开花现象。