1·They gathered soldiers to fight the invading army.
他们召集士兵对抗入侵的军队。
—— 《牛津词典》
2·So they do that to keep other frogs from invading their territory?
所以它们这样做以防止其他青蛙入侵领地？
3·However, factors other than competition often help explain invading species' success.
然而，竞争之外的因素通常有助于解释入侵物种的成功。
4·Nevertheless, factors other than competition often help explain invading species' success.
然而，竞争之外的因素常常有助于解释入侵物种的成功。
5·For example, an invading nonnative plant could alter the quantity of leaf litter production, which would alter nutrient contributions to the soil.
例如，外来植物的入侵可能会改变落叶的数量，从而改变对土壤的营养贡献。