China has sent sent four ships to the month long drills -- a missile destroyer, missile frigate, a supply ship, and its hospital ship the Peace Ark.

中国已派遣4艘军舰来参加这一个月的军演，包括导弹驱逐舰、导弹护卫舰、补给舰和“和平方舟”号医院船。

Technologies like directional drilling, where no longer we can just drill straight down, but instead we can actually turn and steer drill bits to reach very precise and specific locations in the subsurface, miles underground.

像导向钻掘这种技术，当我们无法直直向下钻掘时，我们可以改换成转动并控制钻头，非常精确地到达地下数英里的确切位置。