The only known side effect so far is that such injections may induce a degree of drowsiness.

到目前为止，已知的唯一副作用是这种注射可能引起一定的睡意。

youdao

The only known side effect so far is that such injections may induce a degree of drowsiness.

到目前为止，已知的唯一副作用是这种注射可能引起一定的睡意。

youdao