2.Answer: Blow a paint film with keen penknife, if not disintegrate, do not stick in case, can furl naturally, think flexibility is good namely.
答：用锐利的小刀刮下一块漆膜，若不碎裂、不粘在起，能自然卷起，即认为弹性良好。
3.Shut a book, wallet, penknife
合上书、钱夹、摺刀
4.He forced the lock with a penknife.
他用一把削铅笔刀撬开锁。
5.Find me a penknife, can you, please?
帮我找一把铅笔刀可以吗？
6.Even the railroads seem only scratched in with a penknife.
甚至铁路似乎也只是用铅笔刀随意刮出来的。
