I am going to lift weights.
我要去舉重。(將來時態)
解析:
舉重  名詞,weightlifting
舉重,動詞詞組,lift weight(s)。
weight lifter  舉重運動員
be going to  將要幹什麼…
will  將要。
原句的同義語是
I will go to lift weights.
I will go to weightlifting.
I am going to weightlifting.
Lifting weights will build arm and shoulder muscles.
舉重能使手臂和肩部的肌肉發達。
The weight lifter maxed out at 180 kilograms.
舉重運動員使出了最大力量舉起180公斤。