Tom gave Helen an apple in exchange for a piece of cake.
汤姆用一个苹果和海沦换一块蛋糕。
The thunder claps really scare the children.
打雷的声音真的会吓坏小孩子的。
Then, her composure regained, she was ready to set off with the porter's assistance to search for nay intruders who might still be lurking in her flat.