哪个英文好些的家伙帮我翻译下

肺活量是指一次尽力吸气后，再尽力呼出的气体总量。肺活量是一次呼吸的最大通气量，在一定意义上可反映呼吸机能的潜在能力。健康状况愈好的人肺活量愈大。
After the vital capacity is refers to one time inspires with every effort, again with every effort exhales gas total quantity. The vital capacity is a breath biggest ventilation quantity, in a sense may reflect the breath function potential power. The state of health better person vital capacity is bigger.

男生肺活量大还是女生肺活量大。
The male student vital capacity female student vital capacity is greatly big.

红白色的气球各7个，质底相同，大小相同。
Red white's balloon each 7, the nature bottom is the same, the size is the same.

让7个女生深呼吸一下去吹气球，接着用尺子量出气球的直径，直径越高，说明这个人肺活量越大。
Let 7 female students deep breathing one blow the balloon, then uses the ruler quantity to leave balloon's diameter, the diameter is higher, explained that this person vital capacity is bigger.