We will be covering material in recitations that're not in the lectures, not in the reading, and we do expect you to attend recitations.

我们会讲一些，在教学课上没有提到的材料，也不在阅读材料里，因此我们希望你们能出席复习课。

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Aboard the ship you will attend lectures by Antarctic experts, see wildlife or adventure videos and watch for whales or seabirds.

BBC: Planning your dream Antarctic vacation