Reference checkpoint
[计] 参考检验点
🧩 词语组成解析
checkpoint
['tʃekpɔint;'tʃekˌpɔint]
n. 检查站，车站的行李房;
🗣️ 情景例句
Remember that wonderful little balcony
还记得那个美妙小阳台，
Kept waving to her mother until the train was out of sight.
不断地冲她的母亲挥手，直到火车驶出了视线。
and these will ply the short wings with such irresistible power that they can bore for long distances through an opposing gale before exhaustion follows.
这些肌肉以巨大的力量扇动短小的翅膀，使这类鸟能顶着大风飞行很远的路才会疲劳。