1734年开始指神经系统紊乱。1740年开始指不安，激动，缺乏勇气。wreck最初的意思是赶走，后来指发泄，发泄愤怒或其他暴力情绪。 a nervous wreck最早 ...

The expedition team is getting ready to leave Providence port in Rhode Island to spend twenty days exploring the Titanic. The wreck lies 3,800 metres beneath the waves. The team will study it using ...