lifeboat /ˈlaifbəut/ n.［c］救生艇：Woman and children were the first to get into the lifeboats. 妇女和儿童首先进了救生艇。

 lifetime /ˈlaiftaim/ n. ［c］一生，终生，寿命： In his lifetime he influenced many people. 他一生中影响了很多人。All his lifetime he toiled for others. 他一辈子为别人苦干。It would require more than a lifetime. 这件事一辈子也做不完。