1.Their discovery is a new ingredient that could slow down the rate at which ice cream melts and gives the ice cream a smooth texture.
slow down(使)慢下来;(使)生产缓慢
There is no cure for the disease, although drugs can slow down its rate of development.
尽管药物可以减缓病情的发展,但是这种病仍然是不治之症 。
2.It has been fun working on the applied use of a protein that was initially identified due to its practical purpose in bacteria.
work on从事于…
The company undertakes mechanical work on all types of cars.
该公司承接各类汽车的修理工作 。