by itself

by itself

单独地, 独自地

例句与用法：

If air is needed, the oxygen mask in the plane will pop down by itself.

如果空气缺乏，飞机内的氧气面罩会自动放下。

The house stood by itself on a hill.

这座房屋独立在小山上。

The machine will start by itself in a few seconds.

机器在几秒钟後会自动开启。

The statue stands by itself in the square.

广场上孤零零地立著这座雕像。

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1. 自动地

The machine works by itself.

机器自行运转。

2. 单独地

The farmhouse stands by itself in the fields.

农舍孤零零地坐落在田间。