(all) by itselfa. alone独自:•Will the dog be safe left in the car by itself?把狗独自留在车里安全吗？b. without help or without a person making it work无外力地:•The door seemed to open all by itself.那扇门好像是自己打开的。(all) by itˈself1automatically; without anyone doing anything（完全）自动，无人操作The machine will start by itself in a few seconds.机器将在几秒钟后自动启动。2alone独自；单独The house stands by itself in an acre of land.房子孤零零地坐落在一大片田野间。 |