Murchison followed with his eye the hand of his chronometer . 莫奇生的眼睛追随着他的时计的秒针。
2.
Instantly murchison pressed with his finger the key of the electric battery, completed the circuit, and released the spark into the breach of the columbiad . 莫奇生突然用手指揿下电闸,接通电流,把电火送到了哥伦比亚炮炮底。