名詞 boulder:

1. a large smooth mass of rock detached from its place of origin
   同義詞：bowlder
2. a town in north central Colorado; Rocky Mountains resort center and university town

1. As we bumped over the dusty track, we swerved to avoid large boulders.
   我們在塵土飛揚的道路上顛簸的同時，還得東躲西讓那些大石塊。
2. It required superhuman effort to lift the huge boulder.
   要搬起這塊大石頭需要有超人的力量。

boulder 也作 bowl.der

n.（名詞）
A large rounded mass of rock lying on the surface of the ground or embedded in the soil.
巨礫，圓石：在地表上或埋在土壤中的大而圓的巖石塊

來源：
Middle English bulder
中古英語 bulder
[of Scandinavian origin] * see bhel- 2
[源于斯堪的納維亞語] *參見 bhel- 2