sustain
举一反三
- 保留，记住____________ A: sustain B: retain
- Weshould_________oilandgasbymakingfulluseofotherenergysources. A: reserve B: conserve C: maintain D: sustain
- The Yellow River is one of the several rivers that sustain life and livelihood in China.(2017,6)
- The lonely freshman finds it hard to start or ______a conversation at the new school.(sustain/ capture)
- A buffer can only sustain its pH within its buffer capacity.