He tried hard and long to persuade Spain to relinquish its holdon Cuba and so avoid war.
他一直试图劝说西班牙放弃对古巴的控制，避免开战。
2
That leads to a runaway greenhouse effect — and that, in turn, makes it awfully hard to holdon to the oceans and seas that served as the incubators for all terrestrial life.
这造成了失控的严重温室效应——这反过来让海洋很难在金星表面存在，而海洋是孕育地球上一切生命的摇篮。
3
These machines hold data that computer users don't want to store on their own hard drives.