1. 着手；开始做
If you embark on something new, difficult, or exciting, you start doing it.
e.g. He's embarking on a new career as a writer...
他即将开始新的职业生涯——当一名作家。
e.g. The government embarked on a programme of radical economic reform.
政府开始实施一项彻底的经济改革计划。
2. 登(船);上(船)
When someone embarks on a ship, they go on board before the start of a journey.
e.g. They travelled to Portsmouth, where they embarked on the battle cruiser HMS Renown...
他们行至朴次茅斯，在那里登上了英国皇家海军“声望号”战列巡洋舰。
e.g. Bob ordered brigade HQ to embark.
鲍勃命令旅指挥部登船。