crank up

英 [kræŋk ʌp]

美 [kræŋk ʌp]

使（机器或设备）提高效率; 启动（机器或设备）; 开大，调高（音量）; 使增加; 使增强

柯林斯词典

PHRASAL VERB 使(机器或设备)提高效率
If youcrank upa machine or a device, you make it function harder or at a greater level.
1. Just crank up your hearing aid a peg or two.
  把助听器调高一两个刻度就可以。
PHRASAL VERB 启动(机器或设备)
If youcrank upa machine or device, you start it.
1. ...May's warm weather, which caused Americans to crank up their air conditioners.
  5月份的温热天气使得美国人打开了空调
PHRASAL VERB 开大，调高(音量)
If youcrank upthe volume of something, you turn it up until it is very loud.
1. Someone cranked up the volume of the public address system...
  有人调大了公共广播系统的音量。
2. By about six, they're cranking the music up loud again.
  到6点左右，他们又把音乐声音开大了。
PHRASAL VERB 使增加;使增强
Tocranksomethingupmeans to increase it or make it more intense.
1. The incident that cranked up the fear was the murder of Brian Smith...
  布赖恩·史密斯被谋杀的案子让人们更加恐惧。
2. The legal authorities cranked up the investigation.
  执法部门加大了调查力度。

verb