How does the space station never run out of oxygen? - Alvaro Romero-Calvo and Theo St Francis
级别 C1 · 42 句 · 6:11 · TED-Ed
逐句听 How does the space station never run out of oxygen? - Alvaro Romero-Calvo and Theo St Francis，输入你听到的内容，每个词都会得到批改。
级别 C1 · 42 句 · 6:11 · TED-Ed
逐句听 How does the space station never run out of oxygen? - Alvaro Romero-Calvo and Theo St Francis，输入你听到的内容，每个词都会得到批改。