Bialternant
[数]双交替式
🗣️ 情景例句
Is everything all right?
一切都好吗？
Circumstances are therulers of the weak, instrument of the wise.
弱者困于环境，智者利用环境。
Though he kept throwing up his arms in despair, he readily accepted the $5 I have him.
虽然他绝望地举起双手，但他毫不迟疑地收下了我付给他的5镑钱。