The technologies expected to dominate the new decade also seem to casta dark shadow.
预计主导下一个十年的科技好像也蒙上了一层阴影.
蒙上阴影 A cast ashadow over B.
这句话直译为预计主导下一个十年的科技好像投下一层阴影.为何译文中动作的发出者变成动作的承受者?
The technologies expected to dominate the new decade also seem to cast a dark shadow.
cast：投下。
cast a shadow：投下阴影。
cast a shadow over sth.：把阴影投在某物上面 = 给某物蒙上阴影
“蒙上了一层阴影” ——原翻译漏掉了“给某物”，结果成了科技本身被蒙上了阴影，致使误解。
