重點講解：
1. get to the bottom of 找到…的真正起因；查尋到…的根源；
I have to get to the bottom of this mess.
我必須查清造成這一混亂局面的真正原因[,nkWZnJ+k|^]%*QF00N。
2. zoom in on （攝像機或攝影機）拉近鏡頭，進行近景拍攝；
The camera zoomed in on the actor's face.
攝影機將演員的臉拉近了MlAy8LUFyPww+R9T-。
3. in the meantime 在此期間；其間；
In the meantime the war of nerves seems likely to continue.
與此同時，心理戰似乎還可能繼續MfOy7zmX-v*I9A#I(。
4. rest assured 可以放心；可以安心；
Their parents can rest assured that their children's safety will be of paramount importance.
家長盡可放心，孩子們的安全將成為重中之重aIwIe@=9z5!uWtJr@Q~。