1. The cat burglar must have climbed up that drainpipe.
   飞贼一定是从排水管爬上去的。
2. The grape vine climbed up along the wall.
   葡萄藤沿墙攀缘而上。
3. All this mountain climbing will toughen the boys up.
   这些爬山运动会把孩子们锻炼得身强体壮。
4. The climb down was even harder than the climb up.
   那一次下山比上山还艰难。
5. The boy tore the flesh of his legs climbing up a tree.
   这孩子爬树时刮破了腿。

　2个动词解释