英語「should」の意味・使い方・読み方 | Weblio英和辞書 should (third-person singular simple present should, no present participle, no simple past or past participle) (modal, auxiliary, defective) Ought to; indicating opinion, advice, or instruction, about what is required or desirable
英語「itinerary」の意味・使い方・読み方 | Weblio英和辞書 The length of the Wengernalp Railway from Lauterbrunnen over the Kleine Scheidegg to Grindelwald or vice versa, Riggenbach rack-and-pinion operated throughout, should be a "must" in the itinerary of every Oberland tourist; [ ]