A weight attached to a plumb line, used for measuring depths, determining a vertical line, etc; also, plumb line.

铅锤；铅垂线。

Hence, a test, as of right conduct, uprightness, etc.

(行为正确或正直与否等之)考验；准绳；规范。

Heavy burden, as of sorrow.

沉重的负担(如忧伤)。

To plunge vertically.

垂直落下。

To drop sharply.

骤然落下。