1.work on 從事于
The scientists are still working on inventing new methods of reaching outer space.
科學(xué)家們?nèi)灾铝τ诎l(fā)明到達(dá)外層空間的新方法。
2.show up 顯露
These cancer cells do not show up in the standard tests until they have multiplied to a few billion.
直到這些癌細(xì)胞增加億萬(wàn)倍,它們?cè)跇?biāo)準(zhǔn)性檢測(cè)中并不顯示出來(lái)。
3.head back 回去
If your parents no longer live in your childhood home, you can still head back there and visit the old neighborhood.
如果你的父母已不住在你童年時(shí)的家,你也可以回去那里瞧瞧老鄰居。