"Body weight" in English is the term used to refer to a person's weight. This term comes from the fact that the weight is a measure of the gravitational force exerted on a person's body. Here are some examples of this term in use:

"I need to lose some body weight before my wedding."

"I've been trying to gain body weight, but I just can't seem to do it."

"My doctor told me that I need to monitor my body weight closely to avoid any health issues."

In Chinese, "体重" (tǐzhòng) is the term used to refer to a person's weight. Here are some examples of this term in use:

"我在结婚前需要减轻一些体重。" (Wǒ zài jiéhūn qián xūyào jiǎnqīng yīxiē tǐzhòng.)

"我一直在努力增加体重，但是我似乎做不到。" (Wǒ yīzhí zài nǔlì zēngjiā tǐzhòng, dànshì wǒ sìhū zuò bù dào.)

"我的医生告诉我，我需要密切监测体重，以避免任何健康问题。" (Wǒ de yīshēng gàosu wǒ, wǒ xūyào mìqiè jiāncè tǐzhòng, yǐ bìmiǎn rènhé jiànkāng wèntí.)