1

怎麼

zěnme

how? what? why?

2

降低

jiàngdī

to reduce; to lower; to bring down

3

成本

chéngběn

(manufacturing, production etc) costs

=4

呢

ne

particle indicating that a previously asked question is to be applied to the preceding word ("What about ...?", "And ...?") particle for inquiring about location ("Where is ...?") particle signaling a pause, to emphasize the preceding words and allow the listener time to take them on board ("ok?", "are you with me?") (at the end of a declarative sentence) particle indicating continuation of a state or action particle indicating strong affirmation

=4

呢

ní

dense wool fabric (used for coats and jackets)