不定的

A gust of wind blew the flickering candle out.

一阵风把闪烁不定蜡烛吹熄了。

The heavy rain might settle the changeable weather.

这场大雨也许能使变幻不定天气稳定下来。

He has an incalculable disposition.

他有一种捉摸不定脾气。

Modal verbs generally take the bare infinitive.

情态动词用不带to 不定式。

Adventitious shoots could become whole plants by adventitious shoots multiplication,strength and radication.

过不定芽继代培养及壮苗、生根，形成完整植株，炼苗移栽成活率高。

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

和那捉摸不定人打交道, 你简直无法按预定计划行事, 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.

要找一能定期上门来擦人很难——他们似乎都是些行踪不定人。

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

他指责我是一只知道增加税收和开支自由派，是第二吉米.卡特，墙头草，一举棋不定人。

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东南亚热带雨林有一非特别现象，那就是不定期大开花现象。