in the home decoration business.“There were no cleaning standards (标准) and professional whole-space...;There were no cleaning standards (标准) and professional whole-space cleaning services were hard ……

WINDOW cleaning is, more often than not, an unwelcome task that means balancing awkwardly on chairs and ladders. But it is far more extreme (极端的) in space.During a six-hour spacewalk on Aug 10 ……

of space junk is much harder than simply cleaning your bedroom. Space junk travels at 8 kilometers..., scientists at the Swiss space center have a new cleaning plan. They are about to send a “cleaner satellite ……

to space, was displayed on Oct 24 at the Smithsonian National Air and Space Museum in Virginia, US... to the International Space Station. Developed by NASA and General Motors, a US-based car maker, Robonaut 2 ……

and contact their families on Earth. The space station has special places for work, sleep, cleaning... on Earth. The space station has special places for work, sleep, cleaning, eating, healthcare (健康 ……

enough for a family, followed by a garden, good schools, help with cleaning, gym time, holidays... for a family, followed by a garden, good schools, help with cleaning, gym time, holidays, and perhaps ……

to keep pets, such as dogs. However, nobody enjoys cleaning up pet feces (粪便). A company has... like trees and cars. People can send it off to work in their yards. They can set how much space (空间 ……

.Q: Do the stars look different in space?Charles: It turns out that you don't see the stars all the time in space because the sun is shining all the time. There is no night in space. When you get ……

with financial difficulties.太空行走 space walkTHE nation's first space walk will be carried out in the second half of the year, a manned space program official said last week. According to the official, significant ……

down dirt and stains on clothesB. the self-cleaning clothes easily wear outC. the clothes will be covered with silver and copper after self-cleaningD. people can use the self-cleaning clothes ……

break down dirt and stains on clothesB. the self-cleaning clothes easily wear outC. the clothes will be covered with silver and copper after self-cleaningD. people can use the self-cleaning clothes ……

crew members deliver a lecture to students on Dec 9 from China’s space station. XINHUA / ICShenzhou XIII crew members deliver a lecture to students on Dec 9 from China’s space station ……

do？ - CharlesA: A: Dear Charles,Your problem is common. Sharing space is a hard thing.... Make two groups, and switch (轮换) cleaning duties each weekend.In the meeting, do not get angry ……

clean the schools” and that’s what we did. He’s really committed to this cleaning mission and I’m...” and that’s what we did. He’s really committed to this cleaning mission and I’m not going to discourage ……

out. Finally they learned that cleaning their teeth was important. But they didn’t have toothpaste... (牙线)Sometimes your teeth need deeper cleaning than brushing. That is when floss is helpful. You ……