🧩 词语组成解析
n. [常用作定语]生物研究安全性
level
['lɛvl]
n. 水平，水准;水平线，水平面;水平仪;[物]电平;
adj. 水平的;同高度的;平均的;平稳的;
vt. 使同等;对准;弄平;
vi. 拉平;（用枪等）瞄准（与 at 连用）;变得平坦;将（话、批评等）对准目标;
vi. 瞄准;拉平;变得平坦;
🗣️ 情景例句
Make sure you file this invoice straight away; I don't want it being misplaced.
记得现在就把发票给开了，我可不想弄错了。
When sorrows come, they come not single spies, but in battalions.
祸不单行。
The first of the two ships to reach Java after the race had begun was the Thermopylae,
比赛开始后，“赛姆皮雷”号率先抵达爪哇岛。