Invitehisstudentstostartanexcitingvoyageintoanunknownworldinvisibletotheeye.
还有句是Hewastakingawayheronlytoolforknowingandwasprovidingherwithnosubsitute.科学老师对学生说:Nevertrustyourownsenses.围绕这个讲了很多,里面有这样两句,