这根钓鱼竿可以伸缩调节长度。

The fishing rod can be adjusted ___telescopically to different lengths.

科学家们通过望远镜观测到了这颗新发现的行星。

The newly discovered planet was studied ___telescopically by scientists.

这把钓鱼竿可以伸缩调节长度。

The fishing rod can be adjusted ___telescopically to change its length.