它由锤头、锤杆和手柄组成，锤头为球状，锤杆为有一段为弹簧的弹性杆。

The hammer head is spherical, and the hammer stem is an elastic stem of which one section is a spring.

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它由锤头、锤杆和手柄组成，锤头为球状，锤杆为有一段为弹簧的弹性杆。

The hammer head is spherical, and the hammer stem is an elastic stem of which one section is a spring.

youdao