One hypothesis is that the yellow cedar decline may be caused by insect parasites, specifically the cedar bark beetle.

其中一个假说认为黄杉数量下降是由以衫皮甲虫为代表的寄生害虫导致。

Media reports said that the beetle may cause grain damage of up to 30 percent, although 75 percent damage has also been reported.

媒体报道说：这种甲虫能够引起谷物灾害损失达到30%，其中75%的灾害已经被记录。

Optimus Prime may still be trucking along, but the Autobot Bumblebee has ditched his old Volkswagon Beetle shell to take on the form of a fifth-generation Chevy Camaro.

汽车人大黄蜂已放弃他旧的大众甲壳虫外壳，采用了第五代雪佛兰卡玛洛。