英语语法分析

Pupa - Black swallowtails spend winter as chrysalids, emerging as butterflies when warm weather returns.

蛹期—黑燕尾蝶冬天时变身蝶蛹，气候回暖时破茧而出，变成蝴蝶。

The Chrysalids tackles the idea of genetic mutation, possibly caused by nuclear war, and the Kraken Wakes tells of a world drowned by rising sea levels.

《蛹》提出了可能缘于核战争的基因变异这个话题；而在《海龙苏醒》中，海平面不断上升导致了世界被淹没。