未经训练对儿童使用针灸有风险

短语讲解：

1. Anita Vohra, of the University of Alberta in Edmonton, says people use acupuncture for a variety of conditions, including promotion of wellness and to reduce chronic pain or nausea.

a variety of多种的,各种各样的
例句：This shop sells a variety of toys.
这家商店出售各种各样的玩具。

2. The most common serious side effect included thumb deformities caused by the repeated insertion of needles over a year or more.

side effect (药物等起到的)副作用
例句：This medicine has no side effect.
这种药没有副作用。

3. “In most places, providing needle acupuncture is a regulated act. That is, the health care provider has to have special knowledge, training, and certification in order to actually do that act," says Vohra.

in order to 为了
例句：We started early in order to arrive before dark.
为了在天黑前到达,我们很早就动身了。