n. 发抖的人, 震颤的东西, 自动振动器, 蜂鸣器, 断续器, 电铃

[机] 电震板

[ noun ]
one who quakes and trembles with (or as with) fear
<noun.person>

Trembler \Trem"bler\, n.
One who trembles.

2. Any of certain West Indian birds of the genera
{Cinclocerthia} and {Rhamphocinclus}, of the family
{Mimid[ae]}.
[Webster 1913 Suppl.]

3. (Elec.) The vibrating hammer, or spring contact piece of a
hammer break, as of the electric ignition apparatus for an
internal-combustion engine.
[Webster 1913 Suppl.]