Teach children to tread water with tips from a swimming instructor in this free video swim lesson . 2 Y !

教孩子们 踩在这个自由视频从一个游泳教练技巧 游泳课。

Venice is a metaphor for a sinking city deserving of nature 's wrath leaving its citizens to tread water and explore new ways to sustain life on aquatic earth .

威尼斯，沉没之城的隐喻，这个城市的人们终将被自然的愤怒所吞噬，被迫在这片被 茫茫 海水所淹没的土地上追寻继续生存的空间。

The rafters sprouted dangling bunches of dumplings like some strange exotic fruits and we would tread carefully underneath avoiding the occasional drop of water sliding off the bamboo leaves .

记忆中挂在房椽上的一串串粽子仿佛某种来自异国的奇特水果，我们从下方经过的时候常常要 小心，偶而会有 水珠滑过竹叶滴落下来。

The crew of the capsized yacht had to tread water until the rescuers arrived .

那艘快艇倾覆了，人们在营救人员到达以前只得 踩水。

Apple co-founder Steve Jobs was firmly in charge delivering newly redesigned Macs that were helping the company tread water .

当时，苹果联合创始人史蒂夫•乔布斯还牢牢地控制着公司 大权，并推出了重新设计的新款Mac电脑，以维系苹果公司的经营。

Teaching a child to tread water can be difficult because of the movement of the legs .

教孩子 踩水是很困难的，因为腿的运动。教孩子们 踩在这个 自由 视频从一个 游泳 教练 技巧 游泳课。

The training of the skill of tread water in figure swimming was arranged every time must according its characteristic master basic techniques combine the optional exercise .

花样游泳 踩水技术要根据其自身特点，掌握好基础技术，结合自选动作来安排每一次的训练。

Main factors affecting the friction between tyre and road surface are : slip rate category of tyre tyre tread pattern type density coefficient depth road surface roughness road surface pollution situation water film on road climate and tyre inflation pressure etc.

影响轮胎与路面间摩擦的主要因素有滑移率，轮胎类型， 胎 面 花纹的类型、密度系数、深度，路面粗糙度，路面污染情况，路面 水膜，气候及充气压力等。

I could either tread water until I was promoted which looked to be a few years away or I could change what I was doing .

我要么 原地 踏步直到获得晋升（这看 来得是几年以后的事了），要么改变现在正做的事情。

If you can 't get back to the beach tread water and wave for a lifeguard 's help .

假如你无法游回岸边，可 踩水并向救生员挥手求救。

This time you really mustn 't tread in muddy water and follow him blindly .

你可别跟着他这趟 浑水。