RothrockˈrɒθrəkCOCA⁹⁵⁹³²BNC²³⁶²¹³⁺¹ 基本例句 n.罗思罗克¹⁰⁰ And in the last15 years, the grass has infested rural roads throughout Pennsylvania's Rothrock State Forest—much faster than foresters expected. 过去15年里，柔枝莠竹遍布宾夕法尼亚州立原始森林公园的小路上，蔓延速度比林业学家预期得要快得多。 hjenglish