| 例句 |
The phenomenon of cot death has yet to be explained.婴儿猝死的现象仍然不可解。In developed countries, cot death is the main cause of death between the ages of one week and one year.在发达国家，婴儿猝死是一周到一岁的婴儿死亡的主要原因。Doctors have found a new clue to the riddle of cot death.医生已找到婴儿猝死之谜的新线索。 |