形容词

1. Sam had a cut across one cheek, which made his unpleasant face more lowering than usual.
山姆一边面颊上横着一道伤口，这使得他本来就不好看的脸比平常更显得皱眉皱眼的。

2. She looked up at the lowering sky.
她抬头看着阴沉的天。

1. 降下人或物：Lock-off 单臂抓住支点锁住. | Lowering 降下人或物. | Manky 看上去很不结实的、以前打的膨胀钉.

2. 使低劣的, 减少体力的, 昏暗的：floating point subtracter 浮点减法器 | lowering 使低劣的, 减少体力的, 昏暗的 | saw band 锯带, 带结

3. 降低：lowering with hand brake 用手刹车下放钻具 | lowering 降低 | lowermost packer 最下部封隔器

4. 卑劣的：lowerclassman 大学低年级学生 | lowering 卑劣的 | lowermost 最低的

noun

1. the act of causing something to move to a lower level

Synonym: letting down

2. the act of causing to become less